Mardu Charm is a uncommon Instant card from Khans of Tarkir (KTK), collector number 186. Current market price: $0.07 (foil $0.50), TCGplayer market prices via Scryfall.
Choose one — • Mardu Charm deals 4 damage to target creature. • Create two 1/1 white Warrior creature tokens. They gain first strike until end of turn. • Target opponent reveals their hand. You choose a noncreature, nonland card from it. That player discards that card.