Humming- is a common Creature — Bird card from Unstable (UST), collector number 10. Current market price: $0.17 (foil $0.45), TCGplayer market prices via Scryfall.
Flying Whenever you attack with two or more creatures, Augment {3}{W} ({3}{W}, Reveal this card from your hand: Combine it with target host. Augment only as a sorcery.)