Mega Zam

Greninja-Ash (M) @ Choice Specs
Ability: Battle Bond
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
- Dark Pulse
- Hydro Pump
- U-turn
- Water Shuriken

Landorus-Therian @ Flyinium Z
Ability: Intimidate
EVs: 252 Atk / 4 Def / 252 Spe
Adamant Nature
- Earthquake
- Swords Dance
- Stone Edge
- Stealth Rock

Kyurem-Black @ Choice Band
Ability: Teravolt
EVs: 252 Atk / 4 Def / 252 Spe
Adamant Nature
- Outrage
- Fusion Bolt
- Dragon Claw
- Iron Head

Magnezone @ Choice Specs
Ability: Magnet Pull
EVs: 132 HP / 252 SpA / 124 Spe
Modest Nature
- Volt Switch
- Hidden Power [Fire]
- Flash Cannon
- Thunderbolt

Alakazam @ Alakazite
Ability: Magic Guard
EVs: 4 Def / 252 SpA / 252 Spe
Timid Nature
- Psychic
- Shadow Ball
- Focus Blast
- Substitute