Skin Idea: Void Parasite Yuumi (Ultimate Skin)

This alternate version of Yuumi transforms her from a cute little cat riding a book to a small parasitic void creature. Yuumi would then have a gauge that builds up over time when she is attached to other champions. While attached Yuumi feeds on her host like a tick or a leech. The more the gauge is filled the larger she gets (just like a tick or a leech). At certain check points along the guage she can evolve physical traits to customize her appearance. I'm not talking about chromas either I'm talking about full blown skin changes such as a combination of various kinds of horns, wings, scales, spikes, claws, eyes, etc.

I know the chances of the skin being built are slim to known but I would LOVE a parasite skin and Yuumi is the perfect fit for this.