I remember my shadow priest. That was a fun time playing one. Looks like we get a non talent, portal card that deals 3 damage to a target ally, and if fatal damage is dealt- a card is discarded by the owner. Nice- except that this card is useless in a raid like Ulduar or one of my automated decks. For older decks this will work out very nicely- especially in black temple or molten core where the allies are "moderately" weaker around 3-4 health. For PVP, this card would be good for a shadow priest. The cost of the card gives you damage in addition to the discard.