Bake-kujira, Spectral Whale

Emerge from Artifact {5}{b}{b} (You may cast this spell by sacrificing an artifact and paying the emerge cost reduced by that artifact's mana value.)

When Bake-kujira enters, target opponent exiles the top card of their library, a card at random from their graveyard, and a card at random from their hand. You may cast a spell from among cards exiled this way without paying its mana cost.