The Caretaker
Legendary Creature — Elemental, {5}{U}
Oracle Text
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.)