Master of Pearls is a rare Creature — Human Monk card from Khans of Tarkir (KTK), collector number 18. Current market price: $0.15 (foil $0.18), TCGplayer market prices via Scryfall.
Morph {3}{W}{W} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) When this creature is turned face up, creatures you control get +2/+2 until end of turn.