Wow trachy you just beat me!
My set was gonna have earthquake and shadow punch too
But if it doesn't have No-Guard, and you don't want to wait til' lv. 60 for Hammer Arm, I would go with Brick Break- always reliable, kills dark types
Gyro Ball would be a no-brainer because of very low speed, and would be REALLY great with lagging tail,and if you do get hammer arm that means EXTRA speed loss
I'd expect this pokemon to be able to learn 'punches' from the move tutor(of course nobody knows for sure) but if it does, go Fire Punch for grass coverage, or Thunder punch for water coverage.