Premise: Evil in D+D is a tangible, objective, detectable property. Some spells have the Evil descriptor and using them is an Evil act.
Undead and Fiends are undeniably Evil, and association therewith -should- taint the soul of people that hang out with them, willingly
Detect Evil can be used In Game to determine evilness (or protection from it)
Alignment thought:Casting a spell with the Evil descriptor should advance the casting character's alignment 1 point more evil.
Optional thought for Association: - Being in Party is a willing association
- Everyone in the party with a caster, casting an Evil tagged spell also gains a pip towards evil (or has a 50% chance of doing so )
- If you are in party with an Evil Outsider, or an Evil Undead - gain an Evil point on the Faery Tick. (or 50% chance thereof)
We are not interested in automating alignment shifts. This will remain something fully in the control of DM choice to award.
Completely understand - thank you for the response.