Sableye @ Leftovers
Ability: Prankster
EVs: 252 HP / 252 Def / 4 Spe
Bold Nature
- Dark Void
- Parting Shot
- Topsy Turvy
- Recover
It's STABmons all over again. Taunt, WoW, and KOff are other options.
Alomomola can also abuse Parting Shot+Wish to force switches and bring in sweepers (such as Mega Gyarados or Mega TTar with KOff and/or Sucker Punch) safely while healing them as well.
Alomomola @ Leftovers
Ability: Regenerator
EVs: 252 HP / 252 Def / 4 SpD
Bold Nature
- Wish
- Toxic/Protect
- Parting Shot
- Scald
Gyarados @ Gyaradosite
Ability: Intimidate
EVs: 252 Atk / 4 Def / 252 Spe
Adamant Nature
- Dragon Dance
- Knock Off
- Waterfall
- Substitute/Sucker Punch/Ice Fang/Earthquake
Dark really does offer so much: Knock Off, Pursuit, Sucker Punch, Memento, Taunt, Nasty Plot, Dark Void, Parting Shot, Topsy-Turvy, etc. It's probably one of the best types.