Hypno @ Leftovers
Ability: Inner Focus
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
- Belly Drum
- Baton Pass
- Drain Punch
- Psycho Cut / Zen Headbutt
Surprisingly, the only Pokemon (as of right now) who can baton pass Belly Drum is Hypno, Clefable, and Clefairy. Clefable is a Special Attacker and I want Belly Drum to be useful on the Baton Passer, so I instead went for Hypno. Belly Drum and Baton Passes use is pretty self explanatory, Drain Punch is for coverage, and to heal the damage you took from Belly Drum. Psycho Cut/Zen Headbutt is STAB, choose whichever one you prefer.
Edit: So, I didn't realize this until now but Belly Drum and Baton Pass are incompatible, so I had to completely change the set, sorry for the mess-up!
Hypno @ Blunder Policy
Ability: Insomnia
EVs: 252 Atk / 8 SpD / 248 Spe
Adamant Nature
- Belly Drum
- Dynamic Punch
- Zen Headbutt / Psycho Cut
- Fire Punch
So, the biggest difference in this set is it's Blunder Policy. Setup Belly Drum, then use Dynamic Punch. If it misses, you'll gain the speed boost for Blunder Policy. Fire Punch is coverage for your bug type weakness, and Zen Headbutt is your STAB. If you want 100% accuracy, but lower Base Power, then go for Psycho Cut.