(I tried to do the legs, but I just couldn't get it right, so I chose to not make them, because I wouldn't have changed them from Girafarig anyways.)
Girafarig-Mega-Regular Normal / Psychic
70/80/65/130/75/135 BST : 555
Ability : (Awakened Mind) Psychic-Type attacks deal 1.3x damage. Transforms when asleep.
Girafarig-Mega-Sleep Dark
70/130/75/80/65/135 BST : 555
Ability : (Dormant Darkness) Dark-Type attacks deal 1.3x damage. Can use moves normally while alseep. Transforms when wakes up.
Basically, I meant it as a powerful Rest Abuser, maybe with a set like Psychic/Hyper Voice/Crunch/Rest.
As usual, critique and feedback are highly appreciated :D (on the art, not the theorymoning :p) !