As two actions, you can create a vial of liquid with feathers or leather suspended in it. A creature can drink the contents as an action to alter their physical form so a pair of wings, either feathered or leathery, spread out from their back and they gain a flying speed of 10 meters for the duration. When this spell’s duration would end, if the creature is still flying, it floats gently to the ground at 10 meters per round.