Mega Altaria - OU

Puffie (Altaria-Mega) (F) @ Altarianite
Ability: Cloud Nine
EVs: 252 HP / 100 Def / 156 SpD
Bold Nature
IVs: 0 Atk
- Roost
- Hyper Voice
- Heal Bell
- Flamethrower

Cabelinho (Tangrowth) (M) @ Assault Vest
Ability: Regenerator
Shiny: Yes
EVs: 252 HP / 4 Def / 252 SpD
Sassy Nature
IVs: 0 Spe
- Hidden Power [Ice]
- Giga Drain
- Knock Off
- Earthquake

Habib's (Landorus-Therian) @ Flyinium Z
Ability: Intimidate
EVs: 252 Atk / 4 Def / 252 Spe
Jolly Nature
- Earthquake
- Fly
- Gravity
- Stealth Rock

Thousand (Mew) @ Leftovers
Ability: Synchronize
EVs: 252 HP / 144 Def / 112 Spe
Timid Nature
IVs: 0 Atk
- Ice Beam
- Will-O-Wisp
- Soft-Boiled
- Defog

Hayabusa (Greninja) @ Life Orb
Ability: Protean
EVs: 252 Atk / 4 Def / 252 Spe
Hasty Nature
- Spikes
- Gunk Shot
- Low Kick
- Ice Beam

Lava man (Heatran) @ Choice Scarf
Ability: Flash Fire
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
- Fire Blast
- Flash Cannon
- Earth Power
- Stone Edge