What is a good moveset for Calyrex (Shadow Rider)?

Question

Share your best competitive movesets for Calyrex (Shadow Rider) on this thread! Movesets for regular Calyrex and Calyrex (Ice Rider) belong separately and shouldn't be posted here.

Check the submission guidelines before posting! Only competitive movesets with all relevant details (item, nature, exact EVs, ability, moves) and a solid explanation will be accepted.

Calyrex (Shadow Rider) Pokédex and learnset for reference.

Answer 1

The Old Town Road is so old it died.

Gen 9 AG
Calyrex-Shadow @ Life Orb / Focus Sash
Ability: As One (Spectrier)
Tera Type: Ghost / Normal / Fairy
EVs: 252 SpA / 4 Def / 252 Spe
Timid Nature
IVs: 0 Atk
- Astral Barrage
- Draining Kiss / Tera Blast / Substitute
- Nasty Plot
- Psyshock

Setup sweeper. Nasty Plot is the setup. I really hope I don't need to explain why Astral Barrage is there. Psyshock is STAB (Psychic could perhaps be used too). The last move is for coverage against whatever Dark Types you might face. Tera Fairy allows you to get a powerful STAB Fairy move with TBlast or a weaker but still STAB and healing Draining Kiss. Normal Tera Type can be useful in Caly-S vs Caly-S matchups (or Ditto), but I find the other options more consistent. Life Orb boosts damage output more, but Focus Sash can work for surviving a lethal hit (still unreliable because of hazards though).

Uh, Hope I helped!