Riot, do you want tons of money? More than you get off of Ahri skins?

Then make the easiest skin ever:

FurSona.

1. Take Sona.
2. Put fox ears and a fox tail on her.
3. Put some other generic furry stuff on her. 3.1 Possibly make her look like she's in a full fursuit?
4. Put skin in store.
5. Get stacks of money like you're Kleptomancy Ezreal with the Random Number Gods on your side.

---

I'm only partly joking, to be honest. It'd probably sell rather well as a joke skin. Release it on April first with a couple other skins that fit the theme.

You'll make so much money it won't even be funny.