Magearna @ Steelium Z / Fairium Z
Ability: Soul-Heart
EVs: 4 HP / 252 SpA / 252 Spe
Modest Nature
IVs: 0 Atk
- Flash Cannon / Fleur Cannon
- Aura Sphere
- Thunderbolt / Shadow Ball / Hidden Power [Ice/Fire]
- Shift Gear

Dugtrio @ Focus Sash
Ability: Arena Trap
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Earthquake
- Stone Edge
- Reversal / Sucker Punch
- Stealth Rock

Magearna is a special wincon that, should any special wall be dead and the enemy Scarfer (bar Lele) be dead by it setting up Shift Gear, the game is mostly won with the click of Z-Move, Aura Sphere for Steels which eat either Z-move up, and a multitude of coverage options to hit threats. Thunderbolt hits Celesteela and other bulky waters/flying mons. Shadow Ball hits Marowak-Alola in particular for better damage than anything else Magearna has bar Z-Fleur Cannon, as well as has perfect coverage alongside Aura Sphere. Hidden Power Fire and Ice can deal with Scizor, Ferrothorn; and Landorus, Garchomp, and Dragonite, respectively.

Dugtrio traps whatever Sharpedo and Magearna don't want to deal with and can provide Rocks and trap support for the rest of your team. The set's basically the standard, and I doubt anyone doesn't know at this point what Dugtrio does, but it traps Steels like Heatran, Magnezone, and Magearna for the rest of the team that doesn't want to deal with them. Sucker Punch can be run over Reversal for priority revenge killing.