What is a good moveset for Eternatus?

Question

If you have a good moveset for Eternatus, post an answer below and upvote the best ones. Remember, this is for competitive movesets, not in-game. Ability, EVs etc should be included, and we encourage sets for VGC doubles as well as singles. Make sure to read all the guidelines here.

Eternatus Pokedex & learnset for reference.

Answer 1

Eternatus @ Black Sludge
Ability: Pressure
EVs: 252 HP / 4 SpA / 252 Spe
Timid Nature
IVs: 0 Atk
- Cosmic Power
- Toxic
- Recover
- Mystical Fire

Pressure stall. Cosmic Power raises defenses, Toxic wears down anything other than Poison and Steel types, Recover is a recovery move, and Mystical Fire takes out Steel types.

Answer 2

Eternatus @ Weakness Policy
Ability: Pressure
EVs: 4 Atk / 252 SpA / 252 Spe
Modest Nature
- Agility
- Sludge Wave
- Dynamax Cannon
- Flamethrower

After an Agility, Eternatus will outspeed everything in Ubers, plus basically every choice scarfer. Even without Weakness Policy, Eternatus is really strong.

Answer 3

Eternatus @ Toxic Plate
Ability: Pressure
EVs: 4 Atk / 252 SpA / 252 Spe
Hasty Nature
- Sludge Wave
- Dragon Tail
- Dynamax Cannon
- Flamethrower

Nothing that special. Sludge Wave is pretty powerful when boosted by Toxic Plate, Dragon Tail is to stop things from setting up, Dynamax Cannon is good STAB that takes care of dynamax Pokemon, and Flamethrower can roast Ferrothorn.

Answer 4

Choice Specs Wallbreaker

Eternatus @ Choice Specs
Ability: Pressure
EVs: 4 Def / 252 SpA / 252 Spe
Timid Nature
- Sludge Wave
- Dynamax Cannon
- Mystical Fire / Flamethrower
- Shadow Ball

A pretty basic set if you ask me. Pressure is Eternatus' only ability, so might as well put it in there. Sludge Wave is Eternatus' primary STAB move, Dynamax Cannon being its secondary. Mystical Fire has a 100% chance to lower the opponent's special attack, so it may be useful to cripple special attackers. Flamethrower can be used instead for the tiny burn chance and higher BP. Shadow Ball is used as the only other useful special move out there aside from Flash Cannon, and it also works as coverage against Psychic-type Pokémon.

Comments

You're trying to do too many things. Go for Flamethrower instead. This is a wallbreaker, correct? So maximum power should be its goal. You don't need a weaker fire move because you're not intending to do chip damage, you're intending to swing bonecrushing hits at them.

Answer 5

Toxic Spikes setter + Phaser

Eternatus @ Black Sludge
Ability: Pressure
EVs: 252 HP / 4 Atk / 252 SpA
Mild Nature
- Toxic Spikes
- Dragon Tail
- Dynamax Cannon
- Sludge Wave

Answer 6

Eternatus @Life Orb
Fast Special Sweeper (252 Spd, 252 Sp.Atk, 4 Sp.Def)
Modest (+Sp.Atk -Atk)
ABILITY: Pressure

Sludge Bomb (good Special Poison-type move, better than Cross Poison)
Eternabeam (fantastic Dragon type move)
Flamethrower (good special coverage)
Solar Beam (good coverage)/ Dragon Dance (great stat-boosting move)