The Caretaker

Mana cost: {5}{U}

Legendary Creature — Elemental

Vigilance, ward {2} At the beginning of each end step, if you faced a dilemma this turn, target opponent exiles cards from the top of their library until they exile a nonland card. You may cast that card without paying its mana cost. (You face a dilemma as you choose one or more modes for a spell or ability.)