Psionic Servitor, Any thoughts? Options

I am going to make a servitor with the intention of helping me develop Psychic abilities beyond the crappy ones I already have. I was thinking about using the tarot card "princess of cups" from my spare thoth deck as a base with a sigilised statement of intent. I intend to use a ritual of my own devising with elements drawn and modified from Donald Tyson's "Portable magic", however I am at a loss as to which (if any) archetype to use to aid with it's construction and birthing. I was considering using the aeon, the magician or maybe the priestess in place of a real godform. Any thoughts or suggestions would be much appreciated.

I use the spirit MARUTUKKU for the necronomicon to do wall tapping for me. I find it works really well. It started from me carving Protective sigils on my door.
than I found when I was falling to sleep. was I could make some knocks and raplings on the door just by concentrating on the sigil and it grew to me thinking MARUTUKKU was doing it and I put all my power into the spirit and it works well. I can do the tapping and rappling of the walls of the entire room. not alot. just some cracks and small knocks.