UU Emperor Offense

Xurkitree @ Waterium Z
Ability: Beast Boost
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Thunder
- Rain Dance
- Tail Glow
- Energy Ball

Swampert-Mega @ Swampertite
Ability: Damp
EVs: 252 Atk / 4 Def / 252 Spe
Adamant Nature
- Waterfall
- Earthquake
- Ice Punch
- Rain Dance

Tornadus @ Damp Rock
Ability: Prankster
EVs: 4 Atk / 252 SpA / 252 Spe
Naive Nature
- Rain Dance
- Hurricane
- U-turn
- Taunt

Forretress @ Leftovers
Ability: Overcoat
EVs: 240 HP / 96 Def / 172 SpD
Relaxed Nature
- Stealth Rock
- Spikes
- Rapid Spin
- Explosion

Kingdra @ Choice Specs
Ability: Swift Swim
EVs: 252 SpA / 4 SpD / 252 Spe
Modest Nature
IVs: 0 Atk
- Hydro Pump
- Scald
- Draco Meteor
- Ice Beam

Empoleon @ Life Orb
Ability: Defiant
EVs: 40 HP / 252 Atk / 216 Spe
Adamant Nature
- Aqua Jet
- Waterfall
- Earthquake
- Swords Dance