Mega Nidoking

I just realized you guys are watching me fall in love with this Pokemon lol HES SO GOOOODDD. Like competively, visually, nostalgia-ically(?) lol hes the best. 

Anyway, I digress. I haven't uploaded any megas in a couple months so I figured I would keep my chops up. Here's Mega Nidoking! I wanted to make his ability Sheer Force, but that's stupid since he could just get it anyway. I can't think of one that would benefit him, so if any if you VGC players have any good ideas, comment away!