Allzaf, Necromancer's Disciple

Whenever a creature dies or a card you own enters the graveyard from your hand or deck or a card leaves your graveyard put a 1/1 black skeleton creature token onto the battlefield under your control.
{1}{b}{t}: Sacrifice three skeletons, draw a card.

My master only cares about wanton destruction and wholesale slaughter, I have greater plans.