Walter Sullivan, The Orphan

{2}{b}: Destroy a Human Creature. Put a
Sacrament Counter on Walter Sullivan.
Remove 21 Sacrament Counters from Walter:
Create a Mother token with trample, vigilance,
ward 3 and: when Mother deals damage to an opponent, you win the game. When Mother dies,
you lose the game.
{3}{b}: Return Walter from the graveyard to your
hand.