Nasty Pass w/ MGross

Metagross-Mega @ Metagrossite
Ability: Clear Body
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Meteor Mash
- Zen Headbutt
- Ice Punch
- Hammer Arm

Celebi @ Leftovers
Ability: Natural Cure
EVs: 252 HP / 148 Def / 108 Spe
Bold Nature
IVs: 0 Atk
- Giga Drain
- Nasty Plot
- Baton Pass
- Recover

Heatran @ Leftovers
Ability: Flash Fire
EVs: 248 HP / 192 SpD / 68 Spe
Calm Nature
IVs: 0 Atk
- Lava Plume
- Toxic
- Taunt
- Stealth Rock

Weavile @ Life Orb
Ability: Pressure
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Knock Off
- Icicle Crash
- Ice Shard
- Pursuit

Keldeo-Resolute @ Choice Scarf
Ability: Justified
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
- Hydro Pump
- Scald
- Secret Sword
- Hidden Power [Electric]

Latios @ Life Orb
Ability: Levitate
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
- Draco Meteor
- Psyshock
- Recover
- Defog