Gliscor @ Toxic Orb
Ability: Poison Heal
EVs: 252 HP / 252 Def / 4 Spe
Impish Nature
- Earthquake
- Roost / Substitute
- Stealth Rock / Protect
- Toxic
I hate this set but it's honestly the best one for Gliscor. Baton Pass you'll find isn't that great as you'll be OHKO'd by Ice Punch from M Metagross and a few other things will 2HKO you.
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Klefki @ Leftovers
Ability: Prankster
EVs: 252 HP / 252 Def / 4 Spe
Impish Nature
- Thunder Wave
- Foul Play
- Magnet Rise
- Spikes
Magnet Rise is a niche on Klefki ever since ORAS. It allows you to come in against things that would normally scare you out. Foul Play can help you take care of DDance sweepers as well as Thunder Wave. Spikes is Spikes. You'll find a lot of situations where you can setup.
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Starmie @ Leftovers
Ability: Natural Cure
EVs: 252 HP / 4 SpA / 252 Spe
Timid Nature
- Rapid Spin
- Scald
- Recover
- Psyshock
252 Spe is necessary to outspeed things like Serperior, Thundurus, M Metagross, Keldeo, M Diancie, M Gallade, etc. Against Serperior and Thundy, yeah it's never a good idea to stay in against them but that chip damage could potentially win you the game.
4 SpA guarantees an OHKO on Gengar with Psyshock.
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Breloom @ Life Orb
Ability: Technician
EVs: 4 HP / 252 Atk / 252 Spe
Jolly Nature
- Bullet Seed
- Mach Punch
- Spore
- Force Palm / Rock Tomb
Rock Tomb can hit things like Latios, Gengar, etc on the switch-in. Force Palm hits Heatran, Umbreon, or Ferrothorn.
252 Atk Life Orb Technician Breloom Force Palm vs. 252 HP / 0 Def Heatran: 367-432 (95 - 111.9%) -- 62.5% chance to OHKO
252 Atk Life Orb Technician Breloom Force Palm vs. 252 HP / 88 Def Ferrothorn: 283-335 (80.3 - 95.1%) -- guaranteed 2HKO
You can run Superpower instead as a nuke. It OHKOs both Heatran and Ferrothorn guaranteed but you can't stay in for as long.
Scarf Breloom is really bad. I've run it before, not an effective team member at all.
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Togekiss @ Leftovers
Ability: Serene Grace
EVs: 252 HP / 252 Def / 4 Spe
Bold nature
- Air Slash
- Thunder Wave
- Soft-Boiled
- Aura Sphere
Randomly splits EVs are generally a no-no. It doesn't allow you to live any specific hits so there's no point in weakening the other stats.
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Volcarona @ Sitrus Berry
Ability: Flame Body
EVs: 68 HP / 4 Def / 252 SpA / 184 Spe
Timid Nature
- Quiver Dance
- Fiery Dance / Fire Blast
- Bug Buzz
- Giga Drain
The standard set is 184 Speed to outspeed Landorus-T, not 184 SpA. 68 HP instead of 72 makes your HP an odd number so you can switch into rocks and activate your Sitrus Berry. Fiery Dance allows for more potential setup and just helps in sweeping overall. Giga Drain gives you coverage against things like Unaware Quagsire or just bulky Water types in general. Sitrus can let you switch into rocks or just live a hit and restore 30%.
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Hope this helped if you have any questions be sure to let me know ^^