Battlegrace Angel is a rare Creature — Angel card from Shards of Alara (ALA), collector number 6. Current market price: $1.34 (foil $3.35), 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.