Aithrigaar, Deathbringer

Deathtouch, Flying
When Aithrigaar, Deathbringer attacks
it gains Indestructible until the end of the turn
{x}{b}{r}{g}{t}: Look the top X cards of your deck.
You may reveal a Bird creature from among them
with power less than Aithrigaar, Deathbringer
and put it onto the battlefield tapped. Discard the
remaining cards.