So I have been evoking Marbas. I am still new at this, but I am getting internal dialog with him.
He is healing some physical issues for me. He brought a supplement to my attention within hours after commanding a healing. He said it is something I need and it will improve my health.
He is also helping with lucid dreaming. And helping me attain some information I would otherwise not be able to get.
He also has been encouraging me to get the divination course from BALG. Maybe he gets a kickback on that sale. Haha.