Sinistcha

Sinistcha's Trick Room isn't there to enable a slow sweep, it exists to cancel the opponent's own Trick Room and keep this team's own speed control intact. Calm nature with a bulky HP, Defense, and Special Defense split lets it survive long enough against Trick Room leads to get that cancel off. Matcha Gotcha chips away damage every turn while carrying a burn chance, and Hospitality heals a teammate on switch-in, extending the whole team's longevity. Rage Powder redirects attacks away from the more fragile pieces of the squad, and Colbur Berry blunts the Dark-type pressure that threatens Sinistcha directly.