Faith's Shield is a uncommon Instant card from Dark Ascension (DKA), collector number 7. Current market price: $0.23 (foil $1.93), TCGplayer market prices via Scryfall.
Target permanent you control gains protection from the color of your choice until end of turn. Fateful hour — If you have 5 or less life, instead you and each permanent you control gain protection from the color of your choice until end of turn.