Break of Day is a common Instant card from Dark Ascension (DKA), collector number 3. Current market price: $0.11 (foil $0.30), TCGplayer market prices via Scryfall.
Creatures you control get +1/+1 until end of turn. Fateful hour — If you have 5 or less life, those creatures gain indestructible until end of turn. (Damage and effects that say "destroy" don't destroy them.)