Sin Eater

Lifelink.
Sin Eater enters the battlefield with six -1/-1
counters on it.
When Sin Eater dies, create X 1/1 black Demon creature tokens with flying, where X is Sin
Eater's power.
{x}: Spend only black mana for X. If X is equal to
Sin Eater's toughness remove a -1/-1 counter
from Sin Eater and it gains menace and
indestructible until end of turn.