Flare of Faith is a common Instant card from Innistrad: Midnight Hunt (MID), collector number 19. Current market price: $0.23 (foil $0.20), TCGplayer market prices via Scryfall.
Target creature gets +2/+2 until end of turn. If it's a Human, instead it gets +3/+3 and gains indestructible until end of turn.