Shift gear mag HO with Alex's Keldeo.

Greninja @ Life Orb
Ability: Protean
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Spikes
- Ice Beam
- Extrasensory
- Hidden Power [Fire]

Landorus-Therian @ Focus Sash
Ability: Intimidate
EVs: 252 Atk / 4 SpA / 252 Spe
Naughty Nature
- Stealth Rock
- Earthquake
- Stone Edge
- Explosion

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

Zygarde @ Choice Band
Ability: Aura Break
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
- Extreme Speed
- Thousand Arrows
- Outrage
- Stone Edge

Magearna @ Fightinium Z
Ability: Soul-Heart
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Shift Gear
- Flash Cannon
- Ice Beam
- Focus Blast

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