[Monotype] WATER Mega Gyarados offense

Gyarados-Mega @ Gyaradosite
Ability: Intimidate
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Dragon Dance
- Waterfall
- Crunch
- Substitute

Tentacruel @ Black Sludge
Ability: Liquid Ooze
EVs: 248 HP / 216 Def / 28 SpD / 16 Spe
Timid Nature
- Scald
- Rapid Spin
- Acid Spray
- Toxic Spikes

Swampert @ Leftovers
Ability: Torrent
EVs: 240 HP / 16 Atk / 252 Def
Relaxed Nature
- Stealth Rock
- Earthquake
- Scald
- Roar

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

Manaphy @ Leftovers
Ability: Hydration
EVs: 4 Def / 252 SpA / 252 Spe
Timid Nature
- Tail Glow
- Rain Dance
- Scald
- Psychic

Azumarill @ Choice Band
Ability: Huge Power
EVs: 172 HP / 252 Atk / 84 Spe
Adamant Nature
- Play Rough
- Waterfall
- Aqua Jet
- Superpower