[alcaray]

You only get to script 5 spells. After that they choose based on how dark their mood is, apparantly.

To avoid the problem, either prohibit knowledge of all branches of magic that might lead to something suicidal (which is more studying than I want to do), or provide my snake-woman with more poison immunity (though I'd have to try it out to see if it really worked that way - can you stack beyond 100 resistance in a meaningful way?).

I did make an interesting discovery, though: poison can stack. She started by taking 1 or 2 damage. But by the end of the battle, she took a bright green 30 damage in one round.