Nice n' Powerful

Deoxys-Defense @ Mental Herb
Ability: Pressure
EVs: 252 HP / 56 Atk / 200 Spd
Jolly Nature
- Stealth Rock
- Spikes / Thunder Wave
- Taunt
- Superpower

Bisharp (M) @ Life Orb
Ability: Defiant
EVs: 4 HP / 252 Atk / 252 Spd
Jolly Nature
- Pursuit
- Knock Off
- Sucker Punch
- Iron Head

Thundurus @ Life Orb
Ability: Prankster
Shiny: Yes
EVs: 76 Atk / 180 SAtk / 252 Spd
Hasty Nature
- Thunder Wave
- Thunderbolt
- Superpower
- Hidden Power [Ice]

Aegislash-Blade (M) @ Air Balloon
Ability: Stance Change
Shiny: Yes
EVs: 252 HP / 24 Atk / 232 SAtk
Quiet Nature
- Flash Cannon
- King's Shield
- Shadow Ball
- Shadow Sneak

Gyarados-Mega (M) @ Gyaradosite
Ability: Mold Breaker
EVs: 200 Spd / 252 Atk / 56 HP
Shiny: Yes
Adamant Nature
- Dragon Dance
- Waterfall
- Earthquake
- Ice Fang

Landorus (M) @ Life Orb
Ability: Sheer Force
EVs: 252 Spd / 252 SAtk / 4 Atk
Naive Nature
- Earth Power
- Psychic
- Focus Blast
- Knock Off