Eldritch Nightmare

Flying, trample, annihilator 2
When Eldritch Nightmare is cast, target
opponent reveals their hand. Choose a card and
that player discards that card.
If Eldritch Nightmare would be exiled or put
into a graveyard from play, you may pay
{b}{b}{b}. If you do, shuffle Eldritch Nightmare
into your library instead.