Okay so I need a bit of advice. I'm running a PF1 module in PF2 featuring one of these bad boys. The party has just started, but I'm planning ahead. I would assume the heroes need to be at least level 5 before they take on a level 8 monster (possibly with allies).
Unfortunately, it isn't present in the Bestiary. How do I go about creating an Intellect Devourer in PF2?
What steps should I take? Should I begin by tweaking any other level 8 PF2 monster... or should I start out with the PFSRD Intellect Devourer...?