Leonin Lightscribe is a rare Creature — Cat Cleric card from Strixhaven: School of Mages Promos (PSTX), collector number 20p. Current market price: $0.45 (foil $0.79), TCGplayer market prices via Scryfall.
Magecraft — Whenever you cast or copy an instant or sorcery spell, creatures you control get +1/+1 until end of turn.