Here's how it went down.
1st draw. I won Spectral Brand, and my NPC got slowed, which after trying some spells, the heal spell cured that.
2nd draw. I won the Wish Scroll and my strength was reduced to 6. After trying a couple different spells, the remove curse spell gave me my strength back.
3rd draw. He won, I let him go and now my NPC has a icon that says Mind Shield and I can not get rid of it, nor do I know what it does or its effects.
Also, I'm wandering if I made the right choice by letting him go. He is a demon.
I do have a saved game after the second draw.
Any help about the Mind Shield or the decision to let him go would be appreciated.