User grows two pairs of wings that they can switch what type it is

Pros:
-user can get benefits from all wing types
-user can carry others while flying
-user can combine wings
-user knows how to use wings instantly

Cons:
-transition between wings are painful
-user's limits vary
-user must rest for long periods for stronger wings
-some wings won't mix

Weakness: wing weakness
The effect if this is amplified for the user