Yhorm the Giant

When Yhorm enters the battlefield,
sacrifice it unless it escaped.
Whenever Yhorm enters the battlefield
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.)