Here is the moveset I've been using. You can replace Leftovers with sash, but I've personally found Leftovers more useful. This set hits extremely hard, you fire of one Swords Dance, and after that your Bitter Blade or Shadow Claw can deal with many Pokémon, Shadow Sneak can easily KO Flutter Mane after a Swords dance.
Ceruledge @ Leftovers
Ability: Weak Armor
Tera Type: Ghost
EVs: 252 Atk / 4 Def / 252 Spe
Adamant Nature
- Bitter Blade
- Shadow Claw
- Shadow Sneak
- Swords Dance
Ceruledge @ Leftovers
Ability: Weak Armor
Tera Type: Ghost
EVs: 252 Atk / 4 Def / 252 Spe
Adamant Nature
- Bitter Blade
- Shadow Claw
- Shadow Sneak
- Swords Dance