I'm looking to get into RU since Flygon dropped. What sets have players been running with success (if any)? And who does it pair well with?
Judging by how this gen's RU is looking very close to last gen (outside of all the broken shit like Gengar), I would say a Scarf set with U-turn is probably the best route. Tyrantrum, Zydoge, and Haxorus are much stronger off the bat, but Flygon can escape from bad matchups and act as a pivot with U-turn. It can also clear hazards with Defog, but I prefer Dual Wingbeat to beat Virizion and Venusaur one-on-one. It's something the other RU Dragons can't do, which gives it a decent niche. the set I use:
Flygon @ Choice Scarf
Ability: Levitate
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- U-turn
- Earthquake
- Outrage
- Dual Wingbeat / Defog
EDIT: Oh, sorry. I didn't see the second question. Pivots are generally appreciated by wallbreakers and sweepers, so stuff like Gengar, Lucario, and Mimikyu work well. Other pivots like Slowing and Crobat also work well with Flygon to make a U-port core. Steel-types like Bronzong, Copperajah, and Doublade are great for resisting any Ice- and Fairy- attack aimed at Flygon. If you're going to run Defog, then I would recommend pairing Flygon with another hazard remover like Blastoise, Dhelmise, or Togekiss since Flygon is pressured easily if it locks itself into Defog.