I'm super interested in this start and love the idea of having an army of various spiders and insects to go crazy on the world with, and I've noticed just messing around that you start with a "Necklace of teeth" from the Bugmaster that says it has a pull with all kinds of spiders, and not to get rid of it. Is there anywhere you can figure out a bit more information about the specifics of how these things work? Like what the necklace actually does, why I shouldn't get rid of it?

I've also noticed that some of the spiders around the Bugmaster (typically the blood spiders, but sometimes randomly a bigger skin spider. It hasn't happened to the False Scorpions or Skimmers in my time messing around) will randomly have a dialogue option that allows for recruitment. Is there any way to know what triggers this, or is it totally random?