Lionheart Glimmer is a uncommon Enchantment Creature — Cat Glimmer card from Duskmourn: House of Horror (DSK), collector number 19. Current market price: $0.23 (foil $0.30), TCGplayer market prices via Scryfall.
Ward {2} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {2}.) Whenever you attack, creatures you control get +1/+1 until end of turn.