Dragon Grip is a uncommon Enchantment — Aura card from Khans of Tarkir (KTK), collector number 107. Current market price: $0.08 (foil $0.40), TCGplayer market prices via Scryfall.
Ferocious — If you control a creature with power 4 or greater, you may cast this spell as though it had flash. (You may cast it any time you could cast an instant.) Enchant creature Enchanted creature gets +2/+0 and has first strike.