Interesting champs to give it a try

Garen is one of the simplest and always reliable champ

tahm kench :D very interesting hero to play.

i like kayn a lot, a very skillfull champ who makes a lot of fun

I suggest playing some of the high skill floor champs like Azir, Irelia, Kalista, and LeBlanc.

I think Xin Zhao is very underrated, he can be incredibly powerful if played correctly.

And honestly he shouldnt b only restricted to the JG, he can dominate im mid as well, just watch out for mages with stuns.

Try something easy maybe like Mordekaiser

I believe its dependent on what you consider fun.

High mobility and one-shot potential?
Leblanc, Zed, Katarina

Unstoppable tank?
Sion, Maokai, Sejuani

What I find the most fun myself is high skill ceiling midlaners such as Azir, A sol, Taliyah etc.

It's not possible to convince a monkey to give you a banana by promising it infinite bananas when they die.

samira or shaco very funny