This is a SAV file that is the best for competetive battling.It has most of the movesets for all of the Uber pokemon (Best pokemon).All of the pokemon are legit. (Allowed to be used in tornaments/ not fake/ not made using cheats)
I don't have a wii u anymore to test it myself, but if homebrews are not visible on the wii u menu I think you can press L + R + minus to open the plugin menu, there should be an option called "homebrews on wii u menu" or something similar