Eren, Titan of Freedom's Hope

When Eren enters the battlefield, sacrifice it
unless it escaped.
Whenever Eren enters the battlefield or attacks,
other creatures you control get +1/+0 and gain indestructible until end of turn. Then, Eren
deals 1 damage to each other creature.
Escape—{r}{r}{w}{w}, Exile five other cards from
your graveyard. (You may cast this card from your graveyard for its escape cost.)