It would be neat if it could be a mon with Swarm, since that makes flavor sense. Swarm forces bug-type and psychic fits well too. Illusion is also a neat choice and no guard could be flavored well if the inner matryoshka were to get out. In the end, we get: Bug/Psychic Swarm/Illusion/No Guard It could have fairly offensive stats, too, something along the lines of: 110/120/99/11.. Wait, I think I'm starting to go in the wrong direction here.