Zalreth, the Eternal Dread

Menace, Lifelink

Whenever Zalreth, the Eternal Dread enters the battlefield or attacks, each opponent sacrifices a creature.
If they can’t, they discard two cards and lose 2 life.

At the beginning of your upkeep, if an opponent controls no creatures, you may return target creature card from an opponent's graveyard to the battlefield under your control. It’s a black Zombie in addition to its other types.