OU Flyinium Z Gyarados Balance

Tapu Koko @ Life Orb
Ability: Electric Surge
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 30 Atk
- Thunderbolt
- Hidden Power [Ice]
- U-turn
- Taunt

Venusaur-Mega @ Venusaurite
Ability: Overgrow
EVs: 232 HP / 180 SpA / 80 SpD / 16 Spe
Modest Nature
IVs: 0 Atk
- Sludge Bomb
- Giga Drain
- Synthesis
- Hidden Power [Fire]

Gyarados @ Flyinium Z
Ability: Moxie
EVs: 88 HP / 220 Atk / 24 Def / 176 Spe
Jolly Nature
- Waterfall
- Bounce
- Dragon Dance
- Taunt

Jirachi @ Leftovers
Ability: Serene Grace
EVs: 244 HP / 232 SpD / 32 Spe
Careful Nature
- Stealth Rock
- Iron Head
- U-turn
- Healing Wish

Garchomp @ Choice Scarf
Ability: Rough Skin
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Earthquake
- Dragon Claw
- Outrage
- Fire Fang

Tapu Fini @ Leftovers
Ability: Misty Surge
EVs: 248 HP / 192 Def / 16 SpD / 52 Spe
Bold Nature
IVs: 0 Atk
- Scald
- Moonblast
- Defog
- Taunt