I’m writing a rather long adventure for my home brew, and wanted to confirm if I have a good understanding of the rules around this creature, and specifically what it can and can’t do.
First, with the Mental Invader ability, it can pretty much monitor any of its 10 connections wherever they are as long as they are on the same plane. This isn’t something that is done at all times, but when the worm casts the appropriate spell. There are limitations based on the spell being used such as scrying.
I’m operating under the belief that the worm can perceive quite a bit of information through his minions keeping him aware of almost anything his minions would know.
However, this gets me to the next point. With the possession spell, the worm can possess one of its minions from anywhere and from that point cast spells through the possessed body, and by all effective purposes it will appear that the minion cast the spells.
Does this sound accurate so far?
Further, if the worm possesses someone under the Mental Invader ability, can the worm then cast Mental Invader from the possessed person? For example, the worm encounters someone and controls them via Mental Invader. The worm would prefer to not be known among the population so to get close to key members of society, the possessed slave travels to potential targets. Once the possessed slave is near a potential victim within range of the Mental Invader ability, most victims are going to fail against the save. If the victim resists the attack, they know that a powerful being has attacked them, BUT they do not truly know the source. If the worm so desired, it could also make sure the minion was left feebleminded if the encounter didn’t go as planned.
Does it sound like I’m on track here?
It looks like you are asking about the PF1 Conqueror Worm, not the PF2 Conqueror Worm.
They got quite the buff in the edition change.
PF2 has a normal statblock of it as well.
And yes, it looks like it can do all those things you said. Mental Invader is (unsurprisingly) a mental ability, and so should be fair game to use while possessing a target.
Thank you!