Battlegrace Angel is a rare Creature — Angel card from Modern Masters 2015 (MM2), collector number 10. Current market price: $1.30 (foil $2.10), TCGplayer market prices via Scryfall.
Flying Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.) Whenever a creature you control attacks alone, it gains lifelink until end of turn.