Yngot, Titan of Winter's Wail

When Yngot enters the battlefield, sacrifice it
unless it escaped.
Whenever Yngot enters the battlefield or attacks,
up to one creature gets +0/+3 and gains defender
until end of your next turn, and up to one other
creature doesn't untap during untap steps.
Escape—{w}{w}{u}{u}, exile five other cards from
your graveyard. (You may cast this card from your
graveyard for its escape cost.)