Swiftwing Assailant is a common Creature — Bird Warrior card from Aetherdrift (DFT), collector number 32. Current market price: $0.11 (foil $0.12), TCGplayer market prices via Scryfall.
Flying Start your engines! (If you have no speed, it starts at 1. It increases once on each of your turns when an opponent loses life. Max speed is 4.) Max speed — This creature gets +0/+1 and has vigilance.