Mega Cham

Medicham (M) @ Medichamite
Trait: Pure Power
EVs: 4 HP / 252 Atk / 252 Spd
Jolly Nature (+Spd, -SAtk)
- Fake Out
- High Jump Kick
- Fire Punch
- Zen Headbutt

Tyranitar (M) @ Choice Scarf
Trait: Sand Stream
EVs: 4 HP / 252 Atk / 252 Spd
Jolly Nature (+Spd, -SAtk)
- Pursuit
- Crunch
- Earthquake
- Stone Edge

Gliscor (M) @ Toxic Orb
Trait: Poison Heal
EVs: 244 HP / 192 SDef / 72 Spd
Careful Nature (+SDef, -SAtk)
- Taunt
- Roost
- Knock Off
- Earthquake

Rotom-W @ Leftovers
Trait: Levitate
EVs: 252 HP / 212 Def / 44 Spd
Impish Nature (+Def, -SAtk)
- Pain Split
- Will-O-Wisp
- Volt Switch
- Hydro Pump

Thundurus (M) @ Life Orb
Trait: Prankster
EVs: 4 HP / 252 SAtk / 252 Spd
Timid Nature (+Spd, -Atk)
- Nasty Plot
- Thunderbolt
- Hidden Power [Ice]
- Thunder Wave

Excadrill (M) @ Air Balloon
Trait: Sand Rush
EVs: 4 HP / 252 Atk / 252 Spd
Adamant Nature (+Atk, -SAtk)
- Rapid Spin
- Earthquake
- Iron Head
- Rock Slide