As much as I would normally applaud the idea of more Pokemon spin-offs(those tend to be more interesting than the main games, in my opinion), personally, I can't stand MOBAs, so I would never play this if it ever became a thing.
Mage... is probably not the best word to use for "champion" 'mons. Your list is kinda lopsided towards special attackers. I'd want to see more variety on the selection there. Also, I'm not really fond of how some of the pokemon's moves aren't actual moves from pokemon, like Mewtwo's "energy shield".
Also, you should probably consider reducing the font size on that list.