Xenomorph

Delve, Menace
Whenever Xenomorph deals combat damage to a creature, put an egg counter on that creature.
At the beginning of your upkeep, if Xenomorph
is in your graveyard and an opponent controls a creature with an egg counter on it, an opponent
of your choice sacrifices a creature with an egg
counter on it and you return Xenomorph to the battlefield under you control.