Quoted By:
I play her timid with either Sp Atk and Sp EVs or Hp an Sp EVs.
For the Sp Atk and Sp build I do calm mind, thunderbolt/will o wisp, moonblast, and psychic.
For the Hp and Sp build I do calm mind, wish, will o wisp, and moonblast.
The problem with m-gardevoir is that her stat upgrade isn't too amazing and the new ability she gets cant be used well right now with trace being much better. Furthermore you need to wait for an opportune time to use her, you can just put her in like M-Garchomp or M-Mawile. Shes still good on a team but not as a mega.