| ||||||||||||||
Immunity is an avoidance mechanic available to both players and NPCs. It can be triggered by both items and spells, and it is also sometimes native.
When immune to a spell or ability, a player will not be affected by neither its damage nor any secondary effect triggered by it. Temporary immunity also clears out all debuffs of the affected schools.
Nearly all Elementals are immune to their own spell school natively. Abilities such as 
[Divine Shield] and 
[Ice Block] grant temporary total immunity. Since Patch 1.6, Immunity can also affect mechanics by themselves, such as root, snare, etc. For example, a mob immune to snares will show up "Immune" when firing a 
[Concussive Shot] at it, but won't show it when firing a 
[Frostbolt] at it, even though the debuff won't affect it.
[Banish] also grant the target total immunity, but having their own mechanics, Banish spells are slightly different and don't clear debuffs on the affected NPC/Player.
See also: Combat and Combat rating system
