Affliction Warlocks rotation revolves around keeping curses up on the target and using drain soul at and below 35%. Affliction Warlock has great sustained DPS ramping up along the fight, however for really short fights the damage can be low.

Stats for Affliction Warlock Wotlk

Stat priority

14% hit cap* > Spell Power > Haste (1350) > Crit (40% self buffed) > Spirit > Crit

Affliction Warlock Stats Overview

*Hit Cap

For a caster the hit cap is 17% plus, with 3% with [Suppression] and 3% from other classes debuffs, 11% is the hit rating necessary to hit with spells, however, if there is no Shadow priest or Balance Druid present in the raid, the amount needed is still 14%.

Spell Power

Spell power is the best stat for an affliction warlock after hit, the spell power will increase the damage output of the spells.

Haste

Haste reduces the global cooldown by a small amount and increases the speed of the casts, it lowers the amount of time between curses ticks, after 1350 the value of this stat becomes lower than spirit.

Critical Strike

Affliction warlock abilities can do 200%+ increased damage with critical strikes and this value increases the chance of the pet to have a critical strike, 40%+ crit rate while raid buffed is advised, however, after the 40% cap spirit is superior.

Spirit

With glyph of Life Tap, 20% of the spirit becomes spell power, when haste is equal or above 1350 and crit is equal or superior to 40% spirit becomes superior to haste and crit.

Stats Breakdown without increasing effects

33 hit rating ≈ 1% to hit

33 expertise rating ≈ 1 expertise

33 haste rating ≈ 1% haste

45 critical chance ≈ 1% critical

1 stamina ≈ 10 Health

1 intellect ≈ 15 mana

1 agility ≈ 1 attack power

1 strength ≈ 2 attack power

1 critical chance ≈ 84 agility

14 Armor Penetration ≈ 1% Armor ignore