Special wall (Altaria) @ Heavy-Duty Boots / Leftovers
Ability: Magic Bounce  
EVs: 252 HP / 4 Def / 252 SpD  
Calm Nature  
IVs: 0 Atk  
- Toxic / Dragon Pulse
- Roost  
- Flamethrower  
- Defog / Haze / Heal Bell