Here are a few sets for Spectrier that I made if you still want some.
> Spectrier
Ability: Grim Neigh
Tera Type: Ghost
EVs: 252 Def / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Protect / Substitute
- Will-O-Wisp
- Taunt
- Hex
Spectrier
Ability: Grim Neigh
Tera Type: Ghost
EVs: 248 Def / 8 SpA / 252 Spe
Timid Nature
IVs: 0 Atk
- Protect / Substitute
- Haze
- Taunt
- Shadow Ball
Spectrier
Ability: Grim Neigh
Tera Type: Ghost
EVs: 252 Def / 4 SpA / 252 Spe
Timid Nature
IVs: 0 Atk
- Taunt
- Protect / Substitute
- Scary Face
- Shadow Ball
The Defensive investments are because this is a rare case Def investment will help more than HP. Spectrier is actually pretty bulky. It’s just lacking in Defense.
Set 1: Taunt setup opponents and burn them. Hex to make that hurt. Protect and substitute to avoid hits. This indirectly supports its teammate.
Set 2: This set has Haze to instead of Will-O-Wisp to accomplish a different goal. Fast Haze eliminates opponent boosts quickly. Shadow Ball is better than Hex without a burn. This also indirectly helps its teammate.
Set 3: This set has Scary Face to slow down opponents and give more setup opportunities for your teammate. Shadow Ball has been explained.
So these three sets are practically duplicates that differ on the second support move(Cause Spectrier’s movepool stinks). Taunt is vital and should always be kept to avoid a lethal Tailwind or Trickroom. The other support move is for whatever your team needs. Hope this helped!