Mega Gardevoir + Dugtrio

Gardevoir @ Gardevoirite
Ability: Trace
EVs: 16 HP / 8 Def / 232 SpA / 252 Spe
Timid Nature
IVs: 0 Atk
- Hyper Voice
- Psyshock
- Focus Blast
- Will-O-Wisp

Haxorus @ Life Orb
Ability: Mold Breaker
EVs: 16 HP / 252 Atk / 240 Spe
Adamant Nature
- Dragon Dance
- Dragon Claw
- Earthquake
- Taunt

Dugtrio @ Focus Sash
Ability: Arena Trap
EVs: 252 Atk / 252 Spe
Hasty Nature
- Earthquake
- Reversal
- Memento
- Stealth Rock

Empoleon @ Leftovers
Ability: Torrent
EVs: 248 HP / 8 Def / 252 SpD
Calm Nature
IVs: 0 Atk / 30 SpA
- Scald
- Roar
- Hidden Power [Grass]
- Defog

Chesnaught @ Leftovers
Ability: Bulletproof
EVs: 252 HP / 252 Def / 4 SpD
Impish Nature
- Leech Seed
- Drain Punch
- Spikes
- Spiky Shield

Rotom-Heat @ Leftovers
Ability: Levitate
EVs: 248 HP / 40 Def / 220 Spe
Bold Nature
- Overheat
- Volt Switch
- Pain Split
- Thunder Wave