Eldrazi Gazer

Devoid, Flying, Annihilator 1
When this card enters the battlefield, exile the
top 3 cards of your library.
If your opponent sacrifices a permanent, you may
pay {2}. If you do, add an exiled card to your hand.
{x}{b/r}{r/g}{t}: Exile the top X cards of your library.
Eldrazi Gazer's power and toughness are equal to
the cards in your exile zone.