Spell Power (mage talent)
The subject of this article was removed from World of Warcraft in patch 4.0.1.

 For the spell attribute, see spell power.
Spell Power  

Requirements  
Class  Mage 
Tree  Arcane 
Points required  30 
Properties  
Affects  Critical Strike Bonus 
Spell Power is a Mage talent that increases spell critical strike damage bonus by 25% per rank, up to 50% at max rank. The additional damage for critical strikes makes this a popular talent for raiding mages who go deep into the Arcane tree.
Formulas
Spell critical strike bonus is normally 50% of base spell damage, meaning a spell that hits for 1000 will crit for 1500, a bonus of 500 damage. This talent increases the bonus damage by the listed percent. With two points in this talent, the bonus damage for this example would be 750, for a total crit of 1750. The following formula will compute a critical strike given base spell hit damage, where X is the number of points in Spell Power:
Crit damage = Hit damage * (1.0 + 0.5 * (1.0 + 0.25*X))
Spell Power stacks with the talent [Ice Shards]. With both talents at max rank, a [Frostbolt] that hits for 1000 will crit for 2250, a bonus of 1250 damage. The following formula will compute a Frost critical strike with both talents, where X is the number of points in Spell Power and Y is the number of points in Ice Shards:
Crit damage = Hit damage * (1.0 + 0.5 * (1.0 + 0.25*X + 0.20*Y))
Spell Power also works with the talent Ignite. In this case, the bonus damage is included in the DoT that is applied. With both talents at max rank, a [Fireball] that hits for 1000 will crit for 1750 and Ignite will do an additional 40% of 1750, or 700 damage. The total damage is 2450. The following formula will calculate total Fire critical strike damage (direct plus DoT) with both talents, where X is the number of points in Spell Power and Y is the number of points in Ignite:
Crit damage = (Hit damage * (1.0 + 0.5 * (1.0 + 0.25*X)) * (1.0 + 0.08*Y)
Patch changes
 Patch 4.0.1 (20101012): Removed.
External links
