Gen 9 OU Weavile on Steroids:
Chien-Pao @ Choice Band / Life Orb
Ability: Sword of Ruin
Tera Type: Dark / Psychic
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Crunch
- Sucker Punch
- Ice Spinner / Icicle Crash
- Sacred Sword / Psychic Fangs
MUM THERE'S A WEIRD CAT OUTSIDE
Yes, what you see is a Chien Pao, don't worry, it's tame.
Chien Pao is quite the hard hitter with its ability, Sword of Ruin, which technically makes his Base ATK 175.
...
You heard me right.
In OU Chien Pao is a large threat, threatening a large majority of the tier, with such Pokemon being stuff like non scarf Meowscarada, Cyclizar, Dragapult, Skeledirge, Ting Lu if the user is dumb, etc.
It's all thanks to it's great double stabs, Dark and Ice.
We'll first talk about your choices. Choice Band is for sheer damage and to be braindead and spam crunch, Life Orb is if you want to be a bit more versatile, but I'll still recommend you to be braindead and spam crunch.
Your Tera choices are Dark, or Psychic. Dark is if you want to abuse 2x STAB damage. Psychic is if you really want to surprise an Iron Hands and psychic fangs it, Psychic Tera also gives great resistance to fighting if you can't kill that Iron hands.
To me, Crunch is pretty much, universal, unless you have that one normal tera Toxtricity who really wants to use Boomburst, you should just use Crunch over Throat Chop. Crunch does hard damage, hitting a lot of Pokemon for neutral damage, 2 hit koing most. Sucker Punch is great priority because "priority always rocks", and for Pokemon like Dragapult and a Scarf Gholdengo who think that they can kill you with a fire blast or Make It Rain. I personally use Ice Spinner over Icicle Crash due to Icicle Crash always failing me and giving me a "if it ain't 100 it 50" and missing. However, Icicle Crash does provide flinch hax.
And finally, you could choose between sacred sword to kill the one unsuspecting Chi Yu and Garganacl. Psychic Fangs is great coverage, however, I personally use Sacred Sword more.