Cham+Serp BO

Serperior @ Miracle Seed
Ability: Contrary
EVs: 48 HP / 208 SpA / 252 Spe
Timid Nature
- Leaf Storm
- Dragon Pulse
- Hidden Power [Fire]
- Synthesis

Medicham-Mega @ Medichamite
Ability: Pure Power
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Fake Out
- High Jump Kick
- Zen Headbutt
- Bullet Punch

Rotom-Wash @ Leftovers
Ability: Levitate
EVs: 200 HP / 156 Def / 108 SpD / 44 Spe
Bold Nature
- Hydro Pump
- Volt Switch
- Will-O-Wisp
- Thunder Wave

Landorus-Therian @ Choice Scarf
Ability: Intimidate
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Knock Off
- Earthquake
- Stone Edge
- U-turn

Heatran @ Leftovers
Ability: Flash Fire
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 30 Atk / 30 Def
- Stealth Rock
- Lava Plume
- Earth Power
- Flash Cannon

Keldeo @ Leftovers
Ability: Justified
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
- Scald
- Secret Sword
- Substitute
- Calm Mind