Aankhor Rot

Zombie creatures you control get +1/+1 and have undying.

At the beginning of your upkeep, each opponent mills three cards.

At the beginning of your combat phase, put a creature from each graveyard onto the battlefield under your control. They are zombies in addition to their other types.

Sacrifice a creature: move 1 counter from Aankhor Rot to target creature.
"Life is so final, whereas death, ah death is full of potential"-Aankhor Rot, Necromancer Lord