Eternatus @ Black Sludge  
Ability: Pressure  
EVs: 172 HP / 240 SpD / 96 Spe  
Timid Nature  
IVs: 0 Atk  
- Dynamax Cannon / Sludge Bomb / Dragon Tail
- Flamethrower / Mystical Fire
- Toxic / Toxic Spikes  
- Recover

Eternatus @ Life Orb / Power Herb
Ability: Pressure  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Dynamax Cannon  
- Sludge Bomb / Meteor Beam
- Flamethrower  
- Recover