Lumaret's Favor is a uncommon Instant card from Secrets of Strixhaven (SOS), collector number 153. Current market price: $0.12 (foil $0.23), TCGplayer market prices via Scryfall.
Infusion — When you cast this spell, copy it if you gained life this turn. You may choose new targets for the copy. Target creature gets +2/+4 until end of turn.