It's Virizion

Adva felt herself get mesmerized by the beautiful and tall beauty that appeared in front of her, it was some green horse woman holding a long leaf shaped like a katana, she was moving around her hips seductively, Adva blushed as she had never seen anyone so beautiful and, on top of that, moving in such a sensual way in the nude.

(Reference: https://static1.e621.net/data/ef/90/ef9092bb210938c6da15f571dbc1cae6.webm )

"You may call me Virizion, young Alva, the grass master from the four legendary swordmasters" she said, summoning a piece of log just so she could cut in perfectly matching pieces before it could even hit the ground, the pieces landing in a neat pile, her power and skill were as astounding as her beauty, no wonder she radiated so much confidence.

Adva wasn't sure about what she was feeling for her right at that moment, it was a big admiration for Virizion wanting to be just like her, or maybe a crush developing for such a stunning and majestic woman or a mix of the 2.

"A-are you a goddess?" she asked believing she was majestic enough to be one.

"Well, I'm a legendary Pokémon, so I guess you could refer to me as such if you desire" Virizion said, she wasn't faced at Adva looking at her with awe, that usually happened each time somebody "common" gaze upon her.

"Well it seems dawn is upcoming young Adva, we'll catch up with each other again in your next dream" Virizion said as she snaped her finger, and right at that moment Adva was waking up back on Mushi's room, as she woke back up she began to look around for her new host.