So when i first did this it had a lot of calcs but then it deleted itself and refreshed so heres a refined version;

Excadrill;
Your win con. At +2 drops everything, at neutral 2hko’s or ohko’s almost everything.
Iron head 2hko’s Klefki and Jokteon if either are Magnet Rise
Scout Klefkis moveset, unless HP fire cant tpuch you

Tyranitar;
Lives any one hit from Necrozma
Try to save even if low just for sand purposes
Feel free to spam roar to get T-Spikes and Rocks phasing

Aromatisse;
3hko’d by flash cannon with Klefki, play around with Magic Coat
Lives +1 Tyrantrum Headsmash, or jolly banded headsmash(ohko’s in return with moonblast)
100% SAFE SWITCH INTO HITMONCHAN, HE LEARNS NOTHING SUPER EFFECTIVE BESIDES BULLET PUNCH

Mismagius;
Revenge Killer, Destiny Bond if you can kill
Can 2hko most things, stab shadow ball can deal a good chunk of damage to most things

Cloyster;
Get up Toxic Spikes at all costs
Safe switch/pivot on Alolan Marowhak, even if hes a will-o-wisp varient. This things isnt here to collect kills, its a great pivot and spinner if needed

Latios;
Your special nuke
Most things die to debastating drake


Things to be aware of;
Sneasel can be a threat, but either he has to run scarf in which case he loses a lot of damage, or something like a LO means mismag can ohko with HP Fighting, drill can kill in sand. Expect a set like Icicle Crash, Poison Jab, Low Kick, Knock off/pursuit(if he runs both he loses either ice stab or tyranitar or aromatisse will wall depending which coverage move he omits. Play around this mon best you can.

Do not switch in Drill unless you are 100% sure it is safe. We need it healthy for LO Recoil, and it is absolutely our win condition

Only hazard removers are spin Hitmonchan and Defog Pidgeot