Armor of winter's grasp
warlock attack 1
Target: each creature within the burst
Attack: Charisma vs. Fortitude
Hit: "2d6 + Charisma modifier cold damage, and the target is slowed (save ends)."
Miss: "Half damage."
Effect: "You gain a +2 power bonus to AC and Fortitude until the end of the encounter."[HotFK:208]
Armor of winter's grasp is a daily power available to warlocks at 1st level.