Desert Wind Rage is a daily power available to the Barbarian class at level 19.[PrP:19]
Desert Wind Rage
Barbarian Attack 19
A desert wind rises in the wake of your strike, blinding your foe. The sirocco then expands and settles in, scouring even distant enemies.
Melee weapon
Target: one creature
Attack: Strength vs AC
Hit: 3[W] + Strength modifier damage and the target is blinded until the end of your next turn.
Miss: half damage and not blinded
Effect: You enter the rage of the desert wind. Until the rage ends, at the start of each of your turns, you deal 5 + your Strength modifier fire damage to each enemy within 5 squares of you.