One of those trendy shops-that-weren't-there-yesterday shops opens in Muffinville! It's wooden with frosted windows and a sign over the door that identifies it as "Reincarnationery"
Those who would venture inside would find a boy with wings carving some kind of complex magical circle on the ground using a large golden compass to do so.
[WARNING: If you like the change you get in this thread and want to make it universal, you can't just assimilate it as another form. As a side effect, your character will lose any other forms they can shift into, but retain some of the skills they had in the form they entered in.]