@Mikko Kallio
Seeing as how you've clarified that this is an (Ex) ability and a natural physical alteration, I'm curious about a couple other aspects of this as they relate to your Astrozoan brainchild.
1. There has been some debate about whether an Astrozoan that takes on a form with 4 arms could use the arms proficiently or if they would simply be floppy meat sacks that look like arms. This seems odd considering that the Astrozoan has 7 limbs naturally so would in theory be able to handle multiple limbs/appendages easily but What were your thoughts?
2. I've seen debates over whether your intention for this race was for them to be able to adapt to new forms with comparable abilities for the new form or not. AKA if you changed into an aquatic humanoid, would you gain its water breathing/gills?
thanks in advance for reading and answering. And thanks for your contributions to the game!