Monstrous Rage is a uncommon Instant card from Wilds of Eldraine (WOE), collector number 142. Current market price: $0.30 (foil $0.45), TCGplayer market prices via Scryfall.
Target creature gets +2/+0 until end of turn. Create a Monster Role token attached to it. (If you control another Role on it, put that one into the graveyard. Enchanted creature gets +1/+1 and has trample.)