Requesting trick room advice (for RU

Well, There are many options. Pokémon is an open book, you have to read it

Spoiler

Mienshao @ Choice Scarf
Ability: Reckless
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- U-turn
- High Jump Kick
- Drain Punch
- Knock Off

Diancie @ Leftovers
Ability: Clear Body
EVs: 252 HP / 252 Atk / 4 SpD
Brave Nature
IVs: 0 Spe
- Stealth Rock
- Explosion
- Diamond Storm
- Trick Room

Camerupt-Mega @ Cameruptite
Ability: Sheer Force
EVs: 252 HP / 4 Atk / 252 SpA
Quiet Nature
IVs: 0 Spe
- Earth Power
- Fire Blast
- Rock Slide
- Flamethrower

Pangoro @ Life Orb
Ability: Scrappy
EVs: 252 HP / 252 Atk / 4 SpD
Brave Nature
IVs: 0 Spe
- Hammer Arm
- Parting Shot
- Crunch
- Gunk Shot

Cresselia (F) @ Leftovers
Ability: Levitate
EVs: 252 HP / 4 SpA / 252 SpD
Sassy Nature
IVs: 0 Spe
- Trick Room
- Moonblast
- Psycho Shift
- Lunar Dance

Dragalge @ Life Orb
Ability: Adaptability
EVs: 252 HP / 252 SpA / 4 SpD
Modest Nature
IVs: 0 Spe
- Draco Meteor
- Dragon Pulse
- Sludge Wave
- Hidden Power [Fire]

I like to recommend using some Pokémon with normal/high Speed, in this case running Miensha is a good option. Obviously you won't be sending it when you have TR setted. 0IV in the rest of the team, if you don't know what I am talking you should talk with me in the Competitive Tutoring Room in LV Showdown. This is an offensive Trick Room variant, with only a Wall that is Cresselia. You are obviously weak against Earthquake spamm, using Mienshao to kill Excadrill is very nice with this team, because after this you have an open field and setting Trick Room will be a day in the garden.

Here I have another one that I tested. In my opinion is better and have lesser problems than the last one. More sinergy and it is easer to set the Trick Room. You can use the first to learn how to set Trick room in difficult situations. But if you want the safe way I highly recommend you this one:

Spoiler

Cofagrigus @ Leftovers
Ability: Mummy
EVs: 252 HP / 252 Def / 4 SAtk
Relaxed Nature
IVs: 0 Spd
- Trick Room
- Calm Mind
- Will-O-Wisp
- Shadow Ball

Xatu @ Focus Sash
Ability: Magic Bounce
EVs: 252 HP / 4 Atk / 252 SDef
Sassy Nature
IVs: 0 Spd
- Trick Room
- U-turn
- Light Screen
- Roost

Rampardos @ Life Orb
Ability: Mold Breaker
EVs: 252 Atk / 252 HP / 4 SDef
Adamant Nature
IVs: 0 Spd
- Head Smash
- Crunch
- Iron Head
- Earthquake

Ampharos @ Ampharosite
Ability: Static
Shiny: Yes
EVs: 252 HP / 252 SAtk / 4 SDef
Quiet Nature
IVs: 0 Spd
- Volt Switch
- Signal Beam
- Thunderbolt
- Dragon Pulse

Aromatisse (M) @ Leftovers
Ability: Aroma Veil
EVs: 252 HP / 4 SAtk / 252 SDef
Sassy Nature
IVs: 0 Spd
- Trick Room
- Moonblast
- Wish
- Aromatherapy

Porygon2 @ Eviolite
Ability: Download
EVs: 252 HP / 4 SAtk / 252 SDef
Sassy Nature
IVs: 0 Spd
- Trick Room
- Charge Beam
- Ice Beam
- Toxic

The last that I can say, is that you have to find the correct moment to set the Trick Room. if you see your opponent's team you should know when you have to set the TR. Like in al the game, the prediction is the base all the moves. If you know that you enemy will have to switch, there is when you set something, not only TR. Also, if you see a possible counter to your current Pokémon, you are going to set and run, not trying to set up and stay, it is better to lose a TR turn, than lose a TR setter. As I said this is a base on Pokémon, if you need more details you know how to find me. remember that we the Competitive Mentors are here to help

 

I don't know anything about singles Trick room, much less RU, but Ninja, aren't some of the pokes you mentioned UU?(Porygon2, ampharos e.t.c.)

 

For a trick room team I like putting cresselia as a trick room setter, since its so bluky and can do chip damage like
putting toxic, psychock etc. Aromatisse and cofagrigus are some more of my ideals.
And mawile is good for a trick room team since he/she is fast and can do a lot of damage.

 

He asked for UU support, and about the Trick Room strategy.

Okay, try it and tell me how it worked. And yeah, having more than 2 Trick Room setters is a very nice option like a Plan A, Plan B and Plan C also it help you with the counters of each one, if you see an incoming counter try with other setter xD. If you have questions I am always in the Competitive Tutoring Room. Or here if you send me a PM.

Cresselia is a very nice setter, have many variants as Mixed Wall, Physicall, Special and you can even make a crazy distribution if you take care about setting Trick Room and give a little Sweep taking some hits . (Cresselia was nice in the old VGC, but I wasn't player on that momment xD)