Thundurus @ Leftovers
Ability: Prankster
EVs: 4 Def / 252 SpA / 252 Spe
Timid Nature
- Nasty Plot
- Thunderbolt
- Hidden Power Ice
- Psychic
Feraligatr @ Life Orb
Ability: Sheer Force
EVs: 252 Atk / 4 Def / 252 Spe
Jolly Nature
- Dragon Dance
- Waterfall
- Crunch
- Ice Punch
This Thundurus set beats everything on its own - lures M-Venu and Gengar with psychic, beats Talon, Skarm and Slowbro with thunderbolt, and nails Chomp with HP ice. If he sets up a nasty plot (easy vs Bro or Skarm, also Talon and Chomp if he forces them out) he then outspeeds and OHKOs literally the entire team, apart from Venu which is a 43.8% roll (guaranteed OHKO after rocks).
Feraligatr picks up the slack if needed - with his water/dark/ice coverage he easily beats Chomp, Bro, Talon, and Gengar, and at +1 seriously dents Skarm and Venu too. Again, he finds plenty of set-up opportunities vs Skarm and Bro (and Talon and Chomp which he can also force out) after which he also outspeeds the entire team.