I'd like to ask about Trick Room.
Been doing some testing, so far I like Alola Marowak, as it's impressive wallbreaking abilities reach scary heights with SD and has great coverage to boot.
I think Galarian Slowbro is a good fit as well as it adds some more consistency to it, not purely relying on Quick Claw to outspeed threats
Stakataka I really like as it's a bulky setter that also can apply some offensive pressure
On the latter note, I find Porygon-Z to be a good wall with pivoting through teleporting and Trace has some nice utility, allowing me to switch into Flash Fire Heatran- Magama Storms and set up trick room if they lack taunt, and also reflecting intimidate back on to Lando-T's. It's also an excellent Shadow Ball switchin, which the teams need as I realize it's very easy to end up running multiple psychics/ghosts on these kinds of teams. It feels like a near-staple.
I've been liking Crawduant on these types of teams, as it's a stallbreaker that can also switch into Shadow Ball/ take some dark type moves in a pinch and murders offense under trick room
Cresselia I feel like is a staple mostly due to Lunar Dance and it's nice defensive abilities.
Other picks I've been experimenting with are Whimsicott, it has a nice utility set as it learns Trick Room, Memento, and Encore. Not sure if it's ideal though. I've struggled with Dark types with it ironically due to them being largely invulnerable to it's Prankster moves.
Lastly, I've been trying Rungerius as I wanted a ground type, and it can function a similar role to Stakataka. In this slot I've also tried things like Swampert to ease the heatran matchup.
Edit: Golurk is also really good
Any thoughts on making Trick Room decent? The biggest obstacles I've faced are Heatran, Dragapult, and Weavile, Bisharp and to a much lesser extent Urshifu but with maintaining the momentum and utilizing your pivots/walls they can be played around.