I'm at 105 wins now on Super Double Battles.
Early on, I was mostly just testing out my Trick Room team, but after I passed the Subway Boss, I decided I better put up a better team and went with Sand Storm.
@ Ground Gem
Ability: Sand Rush
EVs: 60 HP/ 252 Atk / 196 Spd
Nature: Adamant
- Earthquake
- Rock Slide
- X-Scissor
- Protect
@ Air Balloon
Ability: Sand Stream
EVs: 4 HP / 252 Atk / 252 Spd
Nature: Jolly
- Crunch
- Rock Slide
- Earthquake
- Protect
@ Life Orb
Ability: Sand Force
EVs: 4 HP / 252 Atk / 252 Spd
Nature: Jolly
- Earthquake
- Rock Slide
- Brick Break
- Swords Dance
@ Dragon Gem
Ability: Sand Veil
EVs: 4 HP / 252 Atk / 252 Spd
Nature: Adamant
- Earthquake
- Outrage
- Substitute
- Swords Dance
This team was very designed to play together, but has worked out well for me with just its pure power running over teams. Order of the day is to spam Earthquake with Excadrill, and back it up with Tyranitar taking out a bulky Pokemon that survives.. or whatever is top priority. I have been worried about Fake Out leads popping his Balloon before Excadrill uses Earthquake, but thus far it hasn't been an issue (and I continue to Protect if I suspect a priority attack first turn).
I did carry Swords Dance over X-Scissor for a while, but Excadrill so rarely has time to set up and X-Scissor adds some welcomed coverage. Tyranitar was originally a terribly designed Rock Polish variant from Gen IV, but has worked out well enough for me. With max speed, he actually out paces quite a bit and can land a strong Crunch, or Rock Slide.
Landorus and Garchomp are simply there for power, even if their coverage doesn't add much. They usually muscle through and outspeed everything. I've kept setup moves on both, although either rarely has time to dance, Garchomp does find Substitute to be pretty useful.
Obviously my one huge weakness are the Ice teams the Subway continues to throw at me. So far I've been lucky enough to avoid a lot of Froslass Blizzard spam and haven't encountered a single Abomasnow yet even though I've had a lot of 4 Ice Pokemon teams. Another weakness is simply type coverage; no Fire moves, no Electric, a lot of Rock and Ground. But for the most part, I just muscle through everything regardless. And everything on the team is bulky enough to usually take a hit.
It's been a pretty easy to play team. The one reason I switched from Trick Room was TR just requires one wrong move, a flinch one turn, or a surprise Protect, to ruin the sweep. TR is very entertaining though, and I want to go back to refining the team at some point.