From Wowpedia
Jump to: navigation, search

Fires for Combat Log events such as a player casting a spell or an NPC taking damage. The event payload is returned from CombatLogGetCurrentEventInfo().

COMBAT_LOG_EVENT and COMBAT_LOG_EVENT_UNFILTERED (CLEU) have identical parameters, the difference is that COMBAT_LOG_EVENT only reflects the filtered events in the combat log chat window. This makes CLEU preferred for use by addons.

Base Parameters

1st Param 2nd Param 3rd Param 4th Param 5th Param 6th Param 7th Param 8th Param 9th Param 10th Param 11th Param
timestamp subevent hideCaster sourceGUID sourceName sourceFlags sourceRaidFlags destGUID destName destFlags destRaidFlags
number - Unix Time in seconds with milliseconds precision, for example 1555749627.861. Similar to time() and can be passed as the second argument of date().
string - The combat log event, for example SPELL_DAMAGE.
boolean - Returns true if the source unit should be hidden in the Blizzard combat log.
string - Globally unique identifier for units (NPCs, players, pets, etc), for example "Creature-0-3113-0-47-94-00003AD5D7".
string - Name of the unit.
number - Contains the flag bits for a unit's type, controller, reaction and affiliation. For example 68168 = 0x10A48: Unit is the current target, is an NPC, the controller is an NPC, reaction is hostile and affiliation is outsider.
number - Contains the raid flag bits for a unit's raid target icon.


Combat log events consist of a prefix and suffix part, with their related parameters. For a full example see #Payload.


Spell IDs are always 0 on Classic.

Prefix 1st Param (12th) 2nd Param (13th) 3rd Param (14th)
RANGE spellId spellName spellSchool
SPELL spellId spellName spellSchool
SPELL_PERIODIC spellId spellName spellSchool
SPELL_BUILDING spellId spellName spellSchool
ENVIRONMENTAL environmentalType


The parameters for critical, glancing, crushing, and isOffHand are true/false flags.

Suffix 1st Param (15th) 2nd Param (16th) 3rd Param (17th) 4th Param (18th) 5th Param (19th) 6th Param (20th) 7th Param (21st) 8th Param (22nd) 9th Param (23rd) 10th Param (24th)
_DAMAGE amount overkill school resisted blocked absorbed critical glancing crushing isOffHand
_MISSED missType isOffHand amountMissed critical
_ABSORBED casterGUID casterName casterFlags casterRaidFlags amount unk1
_HEAL amount overhealing absorbed critical
_HEAL_ABSORBED extraGUID extraName extraFlags extraRaidFlags extraSpellID extraSpellName extraSchool amount
_ENERGIZE amount overEnergize powerType alternatePowerType
_DRAIN amount powerType extraAmount
_LEECH amount powerType extraAmount
_INTERRUPT extraSpellId extraSpellName extraSchool
_DISPEL extraSpellId extraSpellName extraSchool auraType
_DISPEL_FAILED extraSpellId extraSpellName extraSchool
_STOLEN extraSpellId extraSpellName extraSchool auraType
_AURA_APPLIED auraType amount
_AURA_REMOVED auraType amount
_AURA_APPLIED_DOSE auraType amount
_AURA_REMOVED_DOSE auraType amount
_AURA_REFRESH auraType amount
_AURA_BROKEN_SPELL extraSpellId extraSpellName extraSchool auraType
_CAST_FAILED failedType

Special events

Subevent Prefix to use Suffix to use
Subevent 1st Param (12th) 2nd Param (13th) 3rd Param (14th)
ENCHANT_APPLIED spellName itemID itemName
ENCHANT_REMOVED spellName itemID itemName
UNIT_DIED recapID unconsciousOnDeath
UNIT_DESTROYED recapID unconsciousOnDeath
UNIT_DISSIPATES recapID unconsciousOnDeath

Parameter Values

Spell School
Name Combination
Physical #FFFF00   255, 255, 0
Holy #FFE680   255, 230, 128
Fire #FF8000   255, 128, 0
Nature #4DFF4D   77, 255, 77
Frost #80FFFF   128, 255, 255
Shadow #8080FF   128, 128, 255
Arcane #FF80FF   255, 128, 255
Double schools
Holystrike Holy + Physical
Flamestrike Fire + Physical
Holyfire (Radiant) Fire + Holy
Stormstrike Nature + Physical
Holystorm Nature + Holy
Firestorm Nature + Fire
Froststrike Frost + Physical
Holyfrost Frost + Holy
Frostfire Frost + Fire
Froststorm Frost + Nature
Shadowstrike Shadow + Physical
Shadowlight (Twilight) Shadow + Holy
Shadowflame Shadow + Fire
Shadowstorm (Plague) Shadow + Nature
Shadowfrost Shadow + Frost
Spellstrike Arcane + Physical
Divine Arcane + Holy
Spellfire Arcane + Fire
Spellstorm (Astral) Arcane + Nature
Spellfrost Arcane + Frost
Spellshadow Arcane + Shadow
Triple and multi schools
Elemental Frost + Nature + Fire
Chromatic (Chaos) Arcane + Shadow + Frost + Nature + Fire
Magic Arcane + Shadow + Frost + Nature + Fire + Holy
Chaos Arcane + Shadow + Frost + Nature + Fire + Holy + Physical
Value Key Description
-2 HealthCost
-1 None
0 Mana Mana will range from 0 to the maximum mana a unit has. Player mana pools are of a fixed size for all specializations except Arcane Mages, whose mastery increases their maximum mana. Players naturally regenerate mana at a constant rate dependent on their specialization, both in and out of combat, and some abilities and effects (ex [Life Tap], [Power Word: Solace], [Resurgence]) can directly generate mana. This is the default power type for most non-player units, although there are exceptions.
1 Rage Rage is used by Warriors and Druids in bear form. Rage ranges from 0 to 100, but may be increased via player talents. Rage is generated by abilities and, for some specializations, taking damage or dealing damage with auto-attacks. Rage will decay to 0 while out of combat.
2 Focus Wrath of the Lich King Focus is used by Hunters and their pets. Focus ranges from 0 to 100, though this can be increased by spec passives. It has a relatively slow passive regeneration rate, but certain abilities will generate focus directly.
3 Energy Energy is used by Rogues, Monks, and Druids in cat form. Energy ranges from 0 to 100, but may be increased via player talents and spec passives. Energy regenerates rapidly.
4 ComboPoints Warlords of Draenor Combo Points are used by Rogues and Druids in cat form. Combo Points range from 0 to 5, but can be increased up to 6 by the [[Deeper Stratagem] Rogue talent or to 10 by the [Anticipation] Rogue talent. Combo Points are generated by abilities, talents, and passives, and are consumed by Finishing Moves to increase their potency. Combo Points will decay to 0 while out of combat. This value was previously used for hunter pets' happiness, which was deprecated in Cataclysm.
5 Runes Wrath of the Lich King Runes are used as a power type for Death Knights. Deathknights have 6 runes available. As of Legion, Deathknights no longer have different types of runes, and instead all 6 runes can be used for any ability which consumes them. Up to 3 runes can be regenerating at a time, with the other 3, if depleted, effectively having a recharge time of up to twice the normal rune recharge time. Rune recharge rate can be accelerated through [Runic Corruption], or runes can be instantly activated by [Blood Tap] or [Runic Empowerment], as well as a number of talents and set bonuses.
6 RunicPower Wrath of the Lich King Runic Power is used by Death Knights. Runic Power ranges from 0 to 100, though it can be increased by talents and set bonuses. It is gained by spending runes on abilities, or directly by certain abilities, talents, and passive effects. Runic Power is spent on a limited set of damaging abilities, many of which help regenerate additional runes. Runic Power will decay to 0 while out of combat.
7 SoulShards Wrath of the Lich King Soul Shards are collected by Warlocks, and range from 0 to 5, represented the number of filled Soul Shards. As of Legion, this resources is now used by all 3 Warlock specializations. Soul Shards will naturally regenerate or decay as needed while out of combat until they reach 3 out of 5 filled. As of Patch 7.2.5, if the "unmodified" boolean argument to UnitPower is provided, the values returned for Soul Shards will range instead from 0 to 50, with each 10 representing a filled Soul Shard. This is to account for the ability of Warlock_talents#Destruction warlocks to generate fractional Soul Shards in increments of 1/10th, similar to how Burning Embers functioned in prior expansions.
8 LunarPower Legion Astral Power is used by Druids in moonkin form. Astral power goes from 0 to 100. Astral power will decay to 0 while out of combat.
9 HolyPower Wrath of the Lich King Holy Power is used by Retribution Paladins. Holy Power ranges from 0 to 5, and will decay to 0 while out of combat.
10 Alternate Cataclysm New power type since Cataclysm. Known uses: sound level on Atramedes, corruption level on Cho'gall, consumption level while in Iso'rath.
11 Maelstrom Legion The new Shaman resource in Legion, used by both Enhancement and Elemental shamans. Maelstrom ranges from 0 to 100 for Elemental and 0 to 150 for Enhancement, though it can be increased by talents and artifact traits. Maelstrom will decay to 0 while out of combat.
12 Chi Mists of Pandaria Chi is used by Windwalker Monks. Chi ranges from 0 to 5, and will decay to 0 while out of combat.
13 Insanity Legion Insanity is used by Shadow Priests. Insanity is generated by most Shadow Priest abilities, and will be consumed at an ever-increasing rate while the priest is in [Voidform], until it reaches 0 and the priest leaves Voidform (or dies horribly if [Surrender to Madness] is active). Insanity will decay to 0 while out of combat even if the priests is not in [Voidform].
14 Obsolete Mists of Pandaria Burning Embers were used by Destruction Warlocks prior to Legion, which consolidated all warlock specs to use Soul Shards. Value returned would range from 1 to 3 (4 with  [Glyph of Burning Embers], representing number of completely filled Burning Embers. If a third argument "true" is included with UnitPower or UnitPowerMax, the value would instead range from 0 to 30 (40 with  [Glyph of Burning Embers]), representing the individual segments in each Ember. Each Ember had 10 segments, and most effects that generate Embers generate 1 segment per effect (for example, a cast of Incinerate generates one segment, so 10 casts generates a full Ember). As of Legion, this power type is now obsolete.
15 Obsolete2 Mists of Pandaria [Demonic Fury] was used by Demonology Warlocks prior to Legion, which consolidated all warlock specs to use Soul Shards. Value returned would range from 0 to 1000. As of Legion, this power type is now obsolete.
16 ArcaneCharges Legion Arcane Mage resource. Arcane Charges range from 0 to 5. They are generated by casting [Arcane Blast] and [Arcane Explosion], and consumed by [Arcane Barrage], though a number of abilities benefit from having charges without consuming them. Arcane Charges will decay to 0 while out of combat.
17 Fury Legion Havoc Demon Hunter. Fury is generated by [Demon's Bite], as well as a number of talents, and consumed by most Havoc abilities. Fury ranges from 0 to 100, though artifact traits can increase this to up to 170. Fury will decay to 0 while out of combat.
18 Pain Legion Vengeance Demon Hunter. Pain is generated by several Vengeance abilities (ex. [Shear], [Felblade]), and consumed by several others (ex. [Soul Cleave], [Demon Spikes]), predominantly for defensive purposes. A small amount of Pain is also generated when the Demon Hunter takes damage. Pain ranges from 0 to 100, and will decay to 0 while out of combat.
19 NumPowerTypes

Failed Type

See the SPELL_FAILED GlobalStrings for a full list of failed types.

  • "A more powerful spell is already active"
  • "Another action is in progress"
  • "Can't do that while asleep"
  • "Can't do that while charmed"
  • "Can't do that while confused"
  • "Can't do that while fleeing"
  • "Can't do that while horrified"
  • "Can't do that while incapacitated"
  • "Can't do that while moving"
  • "Can't do that while silenced"
  • "Can't do that while stunned"
  • "Interrupted"
  • "Invalid target"
  • "No target"
  • "Not enough energy"
  • "Not enough mana"
  • "Not enough rage"
  • "Out of range"
  • "Target needs to be in front of you."
  • "Target not in line of sight"
  • "Target too close"
  • "You are dead"
  • "You are in combat"
  • "You are in shapeshift form"
  • "You are unable to move"
  • "You can't do that yet"
  • "You must be behind your target."

Miss Type

  • "ABSORB"
  • "BLOCK"
  • "DODGE"
  • "EVADE"
  • "IMMUNE"
  • "MISS"
  • "PARRY"
  • "RESIST"

Aura Type

  • "BUFF"
  • "DEBUFF"

Environmental Type

  • "Drowning"
  • "Falling"
  • "Fatigue"
  • "Fire"
  • "Lava"
  • "Slime"



  • Prints all CLEU parameters.
local function OnEvent(self, event)

local f = CreateFrame("Frame")
f:SetScript("OnEvent", OnEvent)
  • Displays your spell or melee critical hits.
local playerGUID = UnitGUID("player")
local MSG_CRITICAL_HIT = "Your %s critically hit %s for %d damage!"

local f = CreateFrame("Frame")
f:SetScript("OnEvent", function(self, event)

	local timestamp, subevent, _, sourceGUID, sourceName, sourceFlags, sourceRaidFlags, destGUID, destName, destFlags, destRaidFlags = ...
	local spellId, spellName, spellSchool
	local amount, overkill, school, resisted, blocked, absorbed, critical, glancing, crushing, isOffHand

	if subevent == "SWING_DAMAGE" then
		amount, overkill, school, resisted, blocked, absorbed, critical, glancing, crushing, isOffHand = select(12, ...)
	elseif subevent == "SPELL_DAMAGE" then
		spellId, spellName, spellSchool, amount, overkill, school, resisted, blocked, absorbed, critical, glancing, crushing, isOffHand = select(12, ...)

	if critical and sourceGUID == playerGUID then
		-- get the link of the spell or the MELEE globalstring
		local action = spellId and GetSpellLink(spellId) or MELEE
		print(MSG_CRITICAL_HIT:format(action, destName, amount))


This comparison illustrates the difference between swing and spell events, e.g. the amount suffix parameter is on arg12 for SWING_DAMAGE and arg15 for SPELL_DAMAGE.

1617986084.18, "SWING_DAMAGE", false, "Player-1096-06DF65C1", "Xiaohuli", 1297, 0, "Creature-0-4253-0-160-94-000070569B", "Cutpurse", 68168, 0, 3, -1, 1, nil, nil, nil, true, false, false, false

1617986113.264, "SPELL_DAMAGE", false, "Player-1096-06DF65C1", "Xiaohuli", 1297, 0, "Creature-0-4253-0-160-94-000070569B", "Cutpurse", 68168, 0, 585, "Smite", 2, 47, 19, 2, nil, nil, nil, false, false, false, false
Idx Param Value
self <Frame>
timestamp 1617986084.18
subevent "SWING_DAMAGE"
hideCaster false
sourceGUID "Player-1096-06DF65C1"
sourceName "Xiaohuli"
sourceFlags 1297
sourceRaidFlags 0
destGUID "Creature-0-4253-0-160-94-000070569B"
destName "Cutpurse"
destFlags 68168
destRaidFlags 0
amount 3
overkill -1
school 1
resisted nil
blocked nil
absorbed nil
critical true
glancing false
crushing false
isOffHand false
Idx Param Value
self <Frame>
timestamp 1617986113.264
subevent "SPELL_DAMAGE"
hideCaster false
sourceGUID "Player-1096-06DF65C1"
sourceName "Xiaohuli"
sourceFlags 1297
sourceRaidFlags 0
destGUID "Creature-0-4253-0-160-94-000070569B"
destName "Cutpurse"
destFlags 68168
destRaidFlags 0
spellId 585
spellName "Smite"
spellSchool 2
amount 47
overkill 19
school 2
resisted nil
blocked nil
absorbed nil
critical false
glancing false
crushing false
isOffHand false


Event Trace

/etrace comparison with script.

The /etrace command does not show the event payload anymore but this script by nebula restores that functionality.

if not EventTraceFrame then

local function addArgs(args, index, ...)
	for i = 1, select("#", ...) do
		if not args[i] then
			args[i] = {}
		args[i][index] = select(i, ...)
EventTraceFrame:HookScript("OnEvent", function(self, event)
	if event == "COMBAT_LOG_EVENT_UNFILTERED" and not self.ignoredEvents[event] and[self.lastIndex] == event then
		addArgs(self.args, self.lastIndex, CombatLogGetCurrentEventInfo())


SPELL_ABSORBED has three units: 1) the source unit, 2) the dest unit absorbing the damage and 3) the unit that originally applied the spell. It's relatively new and was added in an unknown patch. This fires simultaneously as the SWING_MISSED and SPELL_MISSED subevents which have the "ABSORB" missType and same amount

timestamp, subevent, hideCaster, sourceGUID, sourceName, sourceFlags, sourceRaidFlags, destGUID, destName, destFlags, destRaidFlags, casterGUID, casterName, casterFlags, casterRaidFlags, spellId, spellName, spellSchool, amount, unk1


Advanced Combat Log

Combat log messages may be written to the World of Warcraft\_retail_\Logs\WoWCombatLog.txt file for external parsing purposes. This feature can be enabled with LoggingCombat(true) or toggled with the /combatlog slash command. Combat logging was added on patch 1.7.0[1]


This log line is added when combat logging starts.


Advanced parameters

There can be up to 39 parameters, in order:

  • 9 base params (subevent, source and dest unit)
  • 0 to 3 prefix params (spell/environmental)
  • 17 advanced params
  • 0 to 10 suffix params

Advanced parameters require CVar advancedCombatLogging (added in 6.0.2) to be enabled for meaningful values.

Idx Param Description Example
1 infoGUID GUID of the advanced params unit Player-1096-06DF65C1
2 ownerGUID GUID of the owner in case of pets/minions 0000000000000000
3 currentHP Unit current HP 584
4 maxHp Unit max HP 584
5 attackPower Unit attack power 3
6 spellPower Unit spell power 75
7 armor Unit armor 19
8 absorb Unit applied absorb amount 0
9 powerType Enum.PowerType 0
10 currentPower Unit current power 430
11 maxPower Unit max power 430
12 powerCost Required power amount for the ability 1
13 positionX Unit X position on the map instance -9250.90
14 positionY Unit Y position on the map instance 158.82
15 uiMapID UiMapID 37
16 facing Unit facing direction in the [0, 2π] range 5.5502
17 level Level for NPCs, item level for players 13

Combat Events

Tested with a low level priest in Elwynn Forest.

4/9 05:05:01.824  SPELL_CAST_SUCCESS,Player-1096-06DF65C1,"Xiaohuli-DefiasBrotherhood",0x511,0x0,Creature-0-4253-0-160-94-00006FB363,"Cutpurse",0x10a48,0x0,585,"Smite",0x2,Player-1096-06DF65C1,0000000000000000,584,584,3,75,19,0,0,430,430,1,-9250.90,158.82,37,5.5502,13

4/9 05:05:01.824  SPELL_DAMAGE,Player-1096-06DF65C1,"Xiaohuli-DefiasBrotherhood",0x511,0x0,Creature-0-4253-0-160-94-00006FB363,"Cutpurse",0x10a48,0x0,585,"Smite",0x2,Creature-0-4253-0-160-94-00006FB363,0000000000000000,105,152,0,0,189,0,1,0,0,0,-9213.11,144.31,37,1.7189,30,46,45,-1,2,0,0,0,nil,nil,nil

The difference between SWING_DAMAGE and SWING_DAMAGE_LANDED appears to be the infoGUID unit.
SWING_DAMAGE does not always fire and can be replaced with SWING_MISSED while SWING_DAMAGE_LANDED always fires.

4/9 05:05:07.807  SWING_DAMAGE,Player-1096-06DF65C1,"Xiaohuli-DefiasBrotherhood",0x511,0x0,Creature-0-4253-0-160-94-00006FB363,"Cutpurse",0x10a48,0x0,Player-1096-06DF65C1,0000000000000000,584,584,3,75,19,0,0,430,430,0,-9250.90,158.82,37,5.5502,13,1,0,-1,1,0,0,0,nil,nil,nil

4/9 05:05:07.807  SWING_DAMAGE_LANDED,Player-1096-06DF65C1,"Xiaohuli-DefiasBrotherhood",0x511,0x0,Creature-0-4253-0-160-94-00006FB363,"Cutpurse",0x10a48,0x0,Creature-0-4253-0-160-94-00006FB363,0000000000000000,104,152,0,0,189,0,1,0,0,0,-9245.84,156.92,37,2.8016,30,1,0,-1,1,0,0,0,nil,nil,nil

World Coords

These coords are also returned from C_Map.GetWorldPosFromMapPos() and UnitPosition()

local uiMap = C_Map.GetBestMapForUnit("player")
local pos = C_Map.GetPlayerMapPosition(uiMap, "player")
local continentID, worldPos = C_Map.GetWorldPosFromMapPos(uiMap, pos)

print(continentID, worldPos:GetXY()) -- 0, -9250.8974609375, 158.81927490234 
print(UnitPosition("player")) -- -9250.900390625, 158.80000305176, 0, 0


ARENA_MATCH_START: instanceID, unk1, matchType, teamId

ARENA_MATCH_END: winningTeam, matchDuration, newRatingTeam1, newRatingTeam2


CHALLENGE_MODE_START,"Mists of Tirna Scithe",2290,375,11,[9,122,4,121]


ENCOUNTER_START: DungeonEncounterID, encounterName, difficultyID, groupSize, unk1
ENCOUNTER_START,1146,"Randolph Moloch",1,5,34

ENCOUNTER_END: DungeonEncounterID, encounterName, difficultyID, groupSize, unk1
ENCOUNTER_END,1146,"Randolph Moloch",1,5,1


The coords are the boundary box for the world map.

MAP_CHANGE: uiMapID, uiMapName, x0, x1, y0, y1
MAP_CHANGE,37,"Elwynn Forest",-7939.580078,-10254.200195,1535.420044,-1935.420044
/dump C_Map.GetWorldPosFromMapPos(37, {x=0, y=0}) -- x = -7939.580078125, y = 1535.4200439453
/dump C_Map.GetWorldPosFromMapPos(37, {x=1, y=1}) -- x = -10254.200195312, y = -1935.4200439453
/dump C_Map.GetMapWorldSize(37) -- 3470.8400878906, 2314.6201171875


ZONE_CHANGE: instanceID, zoneName, unk1
ZONE_CHANGE,34,"Stormwind Stockade",1


This logging feature was added on patch 7.0.3

New Logging Feature: COMBATANT_INFO | 2016-01-13 00:00 | Blizzard Entertainment Celestalon

Whenever an ENCOUNTER_START event occurs, a new “COMBATANT_INFO” log line will also be printed for each player in the instance. The current data structure for COMBATANT_INFO is as follows, but is subject to change based on feedback and technical needs:

COMBATANT_INFO,playerGUID,Strength,Agility,Stamina,Intelligence,Dodge,Parry,Block,CritMelee,CritRanged,CritSpell,Speed,Lifesteal,HasteMelee,HasteRanged,HasteSpell,Avoidance,Mastery,VersatilityDamageDone,VersatilityHealingDone,VersatilityDamageTaken,Armor,CurrentSpecID,(Class Talent 1, ...),(PvP Talent 1, ...),[Artifact Trait ID 1, Trait Effective Level 1, ...],[(Equipped Item ID 1,Equipped Item iLvL 1,(Permanent Enchant ID, Temp Enchant ID, On Use Spell Enchant ID),(Bonus List ID 1, ...),(Gem ID 1, Gem iLvL 1, ...)) ...],[Interesting Aura Caster GUID 1, Interesting Aura Spell ID 1, ...]

Some clarifications about a few of those elements:

  • Stats – Those are the current stat values at the time of the log line. Secondary stats are in terms of the Rating amount, not a %.
  • Armor – This is the Armor amount before multipliers (such as Bear Form).
  • Talents – A list of the selected talents. Today’s build will print this ID as a TalentID, a record type that is not dataminable. This will be fixed in a future build to be the SpellID of the talent.
  • Artifact Traits – This will be a list of the selected traits for the character’s current specialization’s artifact (even if it’s not equipped). The Artifact Trait ID is an ID to a new record type to 7.0, which should be dataminable already. Trait Effective Level is the number of points placed in that talent. Note that some Relics will allow this to go beyond the max.
  • Equipment – This is a list of all equipped gear on the character. The first ID is the standard Item ID of the item, followed by its ilvl. After that is a list of enchants on the item, one of each of the 3 possible enchantment types (using the ItemEnchantment ID).
  • Interesting Auras – This is a list of interesting auras (buffs/debuffs) that we have manually flagged to be included in this log line. We’ll welcome feedback about what should be included here but currently plan for set bonuses, well fed, flasks, combat potions, Vantus runes, and player buffs. Nothing has been flagged for this yet, so you won’t see anything here in the current build.

View original post


Event Descriptions


Event Prefix Description
SPELL_ Spell is the prefix for most effects even if the spell is a DoT or channeled. IE when the spell begins to be cast, SPELL_CAST_START is fired and not SPELL_PERIODIC_CAST_START. This is the same with _MISS, _FAILED, etc.
SPELL_PERIODIC Only the effects that are periodic start with this PREFIX. IE: Successfully casting a DoT only happens once therefore even though the spell is periodic use the SPELL_ prefix. However, the damage is periodic so it will start with SPELL_PERIODIC_. 90% of the time you will only care about _DAMAGE or _HEAL.
SPELL_BUILDING Wrath of the Lich King damage or healing that can affect destructable buildings.


Event Suffix Description
_DAMAGE Triggered on damage to health. Nothing Special. (overkill returns a number greater than or equal to zero)
_MISSED Triggered When Effect isn't applied but mana/energy is used IE: ABSORB BLOCK DEFLECT DODGE EVADE IMMUNE MISS PARRY REFLECT RESIST
_HEAL Triggered when a unit is healed
_HEAL_ABSORBED Triggered when a spell absorbs the healing done by another spell. Extra info is provided for the healer and the heal spell, as well as the amount absorbed.
_ENERGIZE Any effect that restores power. Spell/trinket/item set bonuses can trigger this event. IE: Vampiric Touch, or Mark of Defiance (Trinket)
_DRAIN Same as _ENERGIZE but this time you are losing power. Caused by enemies.
_LEECH Same as _DRAIN, but the source unit will simultaneously receive the same kind of power (specified in extraAmount)
_INTERRUPT Spellcasting being interrupted by an ability such as Kick or Pummel.
_DISPEL A buff or debuff being actively dispelled by a spell like Remove Curse or Dispel Magic. The source is the caster of the aura that was dispelled, and the destination is the target which was dispelled (needs verifying).
_DISPEL_FAILED A failed attempt to dispel a buff or debuff, most likely due to immunity.
_STOLEN A buff being transferred from the destination unit to the source unit (i.e. mages' Spellsteal).
_EXTRA_ATTACKS Unit gains extra melee attacks due to an ability (like Sword Sepcialization or Windfury). These attacks usually happen in brief succession 100-200ms following this event.
_AURA_APPLIED Triggered When Buffs/Debuffs are Applied. Note: This event doesn't fire if a debuff is applied twice without being removed. IE: casting Vampiric Embrace twice in a row only triggers this event once. This can make it difficult to track whether a debuff was successfully reapplied to the target. However, for instant cast spells, SPELL_CAST_SUCCESS can be used.
_AURA_REMOVED Triggered When Buffs/Debuffs expire. The souce is the caster of the aura which faded, and the destination is the target from which the aura faded (needs verifying).
_AURA_APPLIED_DOSE Triggered by stacking Debuffs if the debuff is already applied to a target. IE: If you cast Mind Flay twice it causes 2 doses of shadow vunerability, the first time it will trigger, SPELL_AURA_APPLIED (arg10 = shadow vulnerability), and SPELL_AURA_APPLIED_DOSE (arg10 = shadow vunerability) the second. The last argument reflects the new number of doses on the unit.
_AURA_REMOVED_DOSE The opposite of _AURA_APPLIED_DOSE, reducing the amount of doses on a buff/debuff on the unit.
_AURA_REFRESH Resets the expiration timer of a buff/debuff on the unit.
_AURA_BROKEN A buff or debuff is being removed by melee damage. The source is the name of the caster of the aura that was broken, and the destination is the target which the aura broke off of (needs verifying).
_AURA_BROKEN_SPELL A buff or debuff is being removed by spell damage (specified in extraSpell...). Source and destination is the same as the above.
_CAST_START Triggered when a spell begins casting. Instant spells don't invoke this event. They trigger _CAST_SUCCESS, _FAILED instead.
_CAST_SUCCESS Triggered when an instant spell is cast or when a spellcast finishes and doesn't fail. This isn't triggered when the spell misses. On a miss SPELL_MISS will be triggered instead.
_CAST_FAILED If the cast fails before it starts (IE invalid target), then _CAST_START never triggers. However it is possible for a cast to fail after beginning. (IE you jump, move, hit escape etc.)
_INSTAKILL Immediately kills the destination unit (usually happens when warlocks sacrifice their minions).
_CREATE Creates an object (as opposed to an NPC who are 'summoned') like a hunter's trap or a mage's portal.
_SUMMON Summmons an NPC such as a pet or totem.
_DISSIPATES Fires when Gas Clouds are being extracted with Zapthrottle Mote Extractor

Special Events

Event Description
UNIT_DIED destGUID and destName refer to the unit that died.
PARTY_KILL includes both sourceGUID and destGUID, but only reports for you (not in a party) or your other 4 party members (not raid members)

Patch changes


Classic only

  • WoW Icon update.png Hotfix (2020-06-22): The Combat Log is no longer restricted for dungeons and raids. The open world remains restricted to 50 yards.
  • WoW Icon update.png Hotfix (2019-11-20): The Combat Log is restricted to events within 50 yards of the player. (Build 32600)
  • WoW Icon update.png Patch 1.13.2 / API changes (2019-08-26): The spellId and extraSpellId parameters are defunct in Classic, returning 0 to resemble the pre-2.4.0 combat log.

External links