The legendary team

Ragnaros (Magmortar) @ Flame Plate
Ability: Flame Body
EVs: 252 HP / 252 SpA / 4 SpD
Modest Nature
IVs: 0 Atk
- Flamethrower
- Fire Blast
- Lava Plume
- Overheat

Sylvannas (Hoopa) @ Focus Sash
Ability: Magician
EVs: 252 HP / 4 Atk / 252 SpD
Gentle Nature
- Destiny Bond
- Shadow Ball
- Thief
- Skill Swap

Yogg saron (Medicham-Mega) @ Medichamite
Ability: Pure Power
Shiny: Yes
EVs: 252 Atk / 4 SpA / 252 Spe
Hasty Nature
- Metronome
- Acupressure
- Reversal
- Mud-Slap

Medivh (Alakazam) @ Twisted Spoon
Ability: Magic Guard
Shiny: Yes
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Calm Mind
- Psychic
- Magic Coat
- Light Screen

Leeeroy Jenkins! (Accelgor) @ Life Orb
Ability: Unburden
Shiny: Yes
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
- Agility
- Double-Edge
- Final Gambit
- Quick Attack

N'zoth (Muk-Alola) @ Black Sludge
Ability: Power of Alchemy
Shiny: Yes
EVs: 252 HP / 4 SpA / 252 SpD
Calm Nature
IVs: 0 Atk
- Dark Pulse
- Memento
- Shadow Ball
- Substitute