Hot diggity, with Triple Arrows yeeted, Trick Room is viable!
I’m the resident TR enjoyer, always trying to cook with it in every meta. As DLC is coming up, I’ll show you all the team I came up with. It’s pretty good/fun. TR setting Sturdy Magnezone is a treasure.
(RIP Specs Boomburst Armor Tail Farafarig. You were too beautiful for this world.)
https://pokepast.es/8c48422c90e57408
The quick rundown: 3 “sash” offensive TR setters (which get to laugh at all your ridiculous power crept nuking moves unless they’re multi-hitters) all with momentum grabbing suicide moves, bulky pivot Slowbro for a more sustainable TR setter and momentum grabber (and to cover the multi-hit Water attacks that could cleanly break the other three setters), plus Ursaluna to break stall, and Breloom for additional nuking + priority.
Sash Earth Power Hatterene: Generally your lead, unless you suspect multi-hit moves, Iron Head or Fake Out. Sets TR, denies Taunt and hazards (except to Stone Axe and Ceaseless Edge), cannot be OHKOed except by multihit moves, immune to Dragon Darts/Tail, Scale Shot, Roar and Whirlwind, EP brings near perfect offensive coverage, HW for momentum and second breaker or Sturdy Magnezone.
Red Card Poltergeist Mimikyu: Can set up TR against anything except Taunt, multihit moves/Mold Breaker, immune to Fake Out, ExtremeSpeed, Mach Punch, Vaccum Wave, Circle Throw, Scale Shot, Dragon Tail/Darts, and Population Bomb, phases set up sweepers/Sub users without Knock Off, great offensive dual STABs against offensive teams, Curse for momentum and chip.
Sturdy TR Magnezone: Mixed offensive TR setter, Sturdy and HDB for OHKO proofing, resists most multi-hit moves including Dragon Darts, Scale Shot, Pop Bomb, Bullet Seed, Rock Blast, Icicle Spear. Tbolt for good consistent damage, Steel Beam for momentum and nuking cocky ground types, Body Press for Blissey/special walls. Synergies well with Healing Wish for extra free TR set.
Pyro Ball Guts Ursaluna: Raw immediate breaking power with Guts and SD. Facade and HLR for obligatory powerful STABs, Pyro Ball for Corviknight and Sinestea helps dismantle Stall.
Surging Strikes Breloom: Powerful multi-hit Technician nukes, break through Substitutes/Sturdy/Sashes. Surging Strikes benefits from Technician, and crits through Intimidate, Reflect and defense buffs, and OHKOs Landorus and Skeledirge unboosted, while also complementing Bullet Seed offensively. Mach Punch brings powerful priority against offense and notably checks Kingambit. Defensive typing useful, resisting Water, namely priority Aqua Jet and Water Shuriken, and Surging Strikes. SD adds additional breaking/cleaning power.
Eject Button Teleport Slowbro: Bulky TR setter and pivot with Teleport. Eject Button helps grab momentum and preserve Mimikyu and Magnezone’s abilities, and helps activate Ursaring’s Guts without wasting a TR turn. FS helps pressure opponents and forces checkmate situations in conjunction with Ursaring and Breloom. Body Press denies Kingambit from coming in. Teleport grabs momentum and gets breakers in clean. Resists Surging Strikes and Water Shuriken, which is important to relieve pressure from the other TR setting teammates.