Mega Diancie Balance

Diancie-Mega @ Diancite
Ability: Magic Bounce
EVs: 4 Atk / 252 SpA / 252 Spe
Naive Nature
- Protect
- Moonblast
- Earth Power
- Diamond Storm

Heatran @ Leftovers
Ability: Flash Fire
EVs: 248 HP / 164 SpD / 96 Spe
Calm Nature
IVs: 0 Atk
- Lava Plume
- Toxic
- Roar
- Stealth Rock

Gliscor @ Toxic Orb
Ability: Poison Heal
EVs: 244 HP / 32 Def / 176 SpD / 56 Spe
Careful Nature
- Earthquake
- Swords Dance
- Knock Off
- Roost

Amoonguss @ Black Sludge
Ability: Regenerator
EVs: 252 HP / 136 Def / 120 SpD
Calm Nature
IVs: 0 Atk
- Clear Smog
- Giga Drain
- Foul Play
- Spore

Zapdos @ Leftovers
Ability: Pressure
EVs: 248 HP / 236 Def / 24 Spe
Bold Nature
IVs: 30 Atk / 30 Def
- Discharge
- Heat Wave
- Defog
- Roost

Keldeo @ Choice Scarf
Ability: Justified
EVs: 252 SpA / 4 SpD / 252 Spe
Modest Nature
IVs: 0 Atk
- Secret Sword
- Scald
- Icy Wind
- Hydro Pump