Kroxa, Titan of Death's Hunger

When Kroxa enters, sacrifice it unless it escaped.

Whenever Kroxa enters or attacks, each opponent
discards a card, then each opponent who didn't
discard a nonland card this way loses 3 life.

Escape —{b}{b}{r}{r}, Exile five other cards from
your graveyard. (You may cast this card from your
graveyard for its escape cost.)