I was perusing the PRD today, and came up with a few questions about poison.
1) Using poison has often been used as an example of an evil act in previous editions (I believe this was one of the reasons that the assassin PrC had an evil alignment). Does this hold true in Pathfinder? I didn't see it described as such in the core rules. Is using poison still evil? Maybe only deadly poison use is evil, but drow poison and the like is neutral?
2) If it is the case that poison use is canonically evil (or even if it's only deadly poison that's evil), why does the poison spell not have the evil descriptor?
3) I'm confused about which types of poison stack with themselves. I understand the current rules of adding another dose to increase the DC by +2 and the duration by +50%. I'm confused that the rules seem to state that this is only possible when using ingested and inhaled poisons (not when using injury or contact poisons), and then immediately use an injury poison as an example of stackable doses. Here is the relevant section from the PRD:
Unlike other afflictions, multiple doses of the same poison stack. Poisons delivered by injury and contact cannot inflict more than one dose of poison at a time, but inhaled and ingested poisons can inflict multiple doses at once. Each additional dose extends the total duration of the poison (as noted under frequency) by half its total duration. In addition, each dose of poison increases the DC to resist the poison by +2. This increase is cumulative. Multiple doses do not alter the cure conditions of the poison, and meeting these conditions ends the affliction for all the doses. For example, a character is bit three times in the same round by a trio of Medium monstrous spiders, injecting him with three doses of Medium spider venom. The unfortunate character must make a DC 18 Fortitude save for the next 8 rounds. Fortunately, just one successful save cures the character of all three doses of the poison.
Can anyone clear these up for me? Thanks.