I believe I have found Illaoi's true form...

With Illaoi being the next champion coming out, I think she is best fit to follow in this skin line.

Dunkmaster Illaoi

Now, Im not an artist so I dont have the ability to show the skin but its pretty straight forward. Basketball Jersey, basketball for her weapon, basketball hoop or thunder claps (the noisy things that you smack together at sports games) for her tentacles and Q, and then for her E she could chuck her ball in a straight line and when it hits a champ the ghost that is brought back will be sitting on a bench rather than just standing there.

For her animations we could have her dribble the ball when she walks, reach behind her to grab a thunder clap or basketball hoop and slam it down, her W would be her dunks when she goes to auto a champ along with her R being another dunk onto the ground or maybe a quick reverse pivot. Her backing could be her dribbling the ball between her legs leading into her messing up and kicking the ball away.

I really wish I had the ability to create drawings or sketches, because I actually have most of the concept thought out in my head. Thanks for taking the time to listen to my idea. Tell me what you guys think!