Ever wondered what to do with all the locked or untradeable wings? Surely you don't want to sell the for Zen right?! Well, those flappy things on your back sure do look hungry! Yep you guessed it! We can upgrade our wings with our wings!
With all the wings you may have locked or untradeable, this is a good way to boost your stats that the wings provide. You will take the previous teir wings and insert them into the growth area and with a click of a button your wings are now healthy and thriving.
(Good CP Boost Too)