>>17271226I've been leading with Reuniclus to set up Trick Room then switching into either 0 Spe- Mega Mawile or Azumarill.
M-Mawile is absolutely terrifying under Trick Room, and Reuniclus has great synergy with it, being able take out any hard counters to M-Mawile such as Heatran.
Unfortunately, running it under Trick Room doesn't allow it to set up Swords Dance, so I run full coverage
200HP / 252Atk / 56SpD
Adamant Intimidate
Sucker Punch
Iron Head
Play Rough
Fire Fang (especially for Scizor, Ferrothorn, and Genesect until it gets banned to Ubers again)
Since it loses a lot of versatility when Trick Room ends, my strategy is essentially to sweep until I die (unless I come up against a very difficult counter) and as such I've put a few extra EVs into SpD for survivability against special attackers.