He tricked the spirit into his body, then used his tattoo spell to create a binding. This trapped the spirit, but left him permanently possessed. He now deals with the spirit to get more knowledge/help, in return for more freedom for the spirit .
Dreamriders - Chapter 4 by BorjaPindado on deviantART …and, almost instantly, a great blue tree exploded from the ground. I glowed, and lit up the night. It shone brighter than the stars themselves… blue tree
Zems - Blizzard by Tjota on Deviant Art. A Commission for Gustav Alander of Sweden. Thank you This is a re-imagination of his fiancée, Malin. They seem to love fantasy-themed art, and requested it to have thick Renaissance feel.