Psychic Corruption of Malbolge

Heroic Tier
Prerequisite: Tiefling, any psionic class
Benefit: After you hit an enemy with an augmented psionic power, that enemy gains vulnerability to the fire and the psychic damage of your powers until the end of your next turn. The vulnerability equals 2 and increases to 4 at 11th level and 6 at 21st level.

Update (6/14/2010)
Replace the Benefit entry with the new text.

Published in Player's Handbook Races: Tiefling, page(s) 26.