My group's Psyker Hermes Has a secret from everyone. Inside his body is an Eldar Spirit stone that holds the soul of a Farseer. The soul has agreed to aid in return for being returned to her people at the first opportunity. She gives cryptic warnings and gives the Psyker the Favoured of the Warp talent.
Recently however Hermes allowed the Eldar to "mount" him and gave control of his body and mind to the xeno. He eventually managed to regain control but i feel he should pay for allowing a Xeno to control him. The question is:
Insanity? It seems a little begnin. I am considering somewhere in the range of 1d10 insanity with no willpower roll to shield him. He did relinquish control voluntarily.
Corruption? I keep reading the description for Corruption in the book and cannot find anything to back it up. Again considering 1d10 Corruption.
I would value your input…