Crimson Pheonix Rage is a daily power available to the Barbarian class at level 29.[PH2:61]
Crimson Phoenix Rage
Barbarian Attack 29
Close burst 1
Target: each creature in burst
Attack: Strength vs AC
Hit: 3[W] + Strength modifier damage, and ongoing 10 fire damage (save ends).
Miss: half damage.
Effect: You enter the rage of the crimson phoenix. Until the rage ends, your at-will attack powers deal 1[W] extra fire damage on a hit. In addition, whenever you drop to 0 hit points or fewer, you can spend a healing surge as an immediate interrupt.