Mariana Bulky Offense

Greninja-Ash @ Choice Specs
Ability: Battle Bond
EVs: 252 SpA / 16 SpD / 240 Spe
Timid Nature
- Water Shuriken
- Dark Pulse
- Hydro Pump
- U-turn

Mamoswine @ Focus Sash
Ability: Oblivious
EVs: 252 Atk / 4 Def / 252 Spe
Jolly Nature
- Ice Shard
- Earthquake
- Icicle Crash
- Stealth Rock

Muk-Alola @ Assault Vest
Ability: Poison Touch
EVs: 248 HP / 188 Atk / 4 SpA / 44 SpD / 24 Spe
Brave Nature
- Knock Off
- Shadow Sneak
- Poison Jab
- Flamethrower

Magneton @ Eviolite
Ability: Magnet Pull
EVs: 72 HP / 252 SpA / 184 Spe
Modest Nature
IVs: 0 Atk
- Volt Switch
- Flash Cannon
- Thunderbolt
- Hidden Power [Fire]

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

Tapu Lele @ Choice Scarf
Ability: Psychic Surge
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Psychic
- Moonblast
- Hidden Power [Fire]
- Thunder