Let's try to come up with new potential sets based on the stuff we know about the DLC now, can be both returning Pokemon or already available ones that learned new moves.

Previous kind of related thread: >>43902292

Magearna learns Draining Kiss now so this could be a new Calm Mind set:

Magearna @ Leftovers
Ability: Soul-Heart
EVs: 248 HP / 160 Def / 76 SpD / 24 Spe
Bold Nature
IVs: 0 Atk
- Calm Mind
- Draining Kiss
- Thunderbolt
- Focus Blast

24 speed EVs to outspeed uninvested Corviknight. This set kind of struggles with Rotom-Heat but there aren't many better moves than Focus Blast to hit Rotom with anyway.