Rotom-Mow @ Heavy-Duty Boots
Ability: Levitate
EVs: 252 HP / 4 SpA / 252 Spe
Timid Nature
IVs: 0 Atk
- Volt Switch
- Defog
- Will-O-Wisp
- Leaf Storm
Rotom-Mow is a great partner for Swords Dance Drapion, as it can switch into bulky ground and water types like Mudsdale and Vaporeon which check Drapion quite well, and scare them out with a STAB Leaf Storm.
It also provides Defog and Volt Switch support, which helps Drapion to get onto the battlefield with taking as less damage as possible.
Furthermore, Rotom-Mow and Drapion share a check in Vileplume and Rotom-Mow can chip that down with hazard damage and Volt Switch damage into a breaker that scares it out and makes the damage stick throughout the game.
These two really work really well together.