The Caretaker 47 (Star Trek)

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.)

NM - $2.30
LP - $1.90
MP - $1.50
HP - $1.50
DMG - $1.50