Lose Calm is a common Sorcery card from Dragons of Tarkir (DTK), collector number 147. Current market price: $0.18 (foil $0.40), TCGplayer market prices via Scryfall.
Gain control of target creature until end of turn. Untap that creature. It gains haste and menace until end of turn. (A creature with menace can't be blocked except by two or more creatures.)