Balrog of Khazad-Dum

Fly, Artifact Protection,, Annihilator 2
When this creature enters the battlefield, exile
the top 3 cards of each library and your
opponents' hand. And each time this creature
attacks, exile the top 3 cards of each library and
exile each target opponent's hand.
When this creature leaves the battlefield, take an
out-of-game card named: Balrog Del Celebdil