Gorlamahk, the Grim Whisper

Flying, lifelink
Whenever you cast a black spell, you may pay life
equal to that spell's converted mana cost. If you
do, draw a card.
Sacrifice another creature: Gorlamahk, the Grim
Whisper gains indestructible until end of turn.
"Consider it a fool's wish. But alas, I am no genie.."