Some lineages are able to manifest natural wings. for example, if you have a fey creature in your family line you may be able to gain butterfly wings, or if you were blessed by a solar you might manifest feathery wings on your back. 

When you take this feat you gain wings on your back that can look like however you want. You gain a flying speed of 30 feet and can fly for up to 10 minutes per long rest, this can be all at once or in multiple short flights, each one using a minimum of 1 minute from the duration. You do not hover and if you are knocked unconscious, prone, or are restrained you will fall to the surface below. You cannot fly if you are encumbered or are wearing armor you are not proficient in.