Kurosh, Titan of Mind's Abyss

When Kurosh enters the battlefield, sacrifice it
unless it escaped.
Whenever Kurosh enters the battlefield or attacks,
target opponent puts the top six cards of their
library into their graveyard and they lose 2 life.
Escape—{u}{u}{b}{b}, exile five other cards from
your graveyard. (You may cast this card from your
graveyard for its escape cost.)