I'd appreciate some clarification on how the various saves work, so here's a bunch of questions:

1) Some spells apparently check against con (plague, poison, and the like), does this mean that against them it doesn't matter how much save vs. spell (svs) you have?

2) Does saving vs. neuro disrupt only check save vs. paralysis (svp), i.e. again it doesn't help you if you have -50svs?

3a) What about spells/communes that do mental damage, does svs have any impact or is it only a check against save vs. mental (svm)? Or a combination of the two, average or something?

3b) E.g. PWK, which IIRC does mental damage if it doesn't kill you: is the kill chance against svs, but then against svm to determine if you take full or 50% mental damage?

3c) Generally speaking, is svm mostly just an "anti-bard" save? I take it both affects whether a song malediction lands, and if it does only 50% damage?

4) What if you add spellbane to the mix, does it work better the more svs you have?

Thanks!