I raised this topic in chat yesterday, and though I did get a good answer, I'm still not completely satisfied with it.
In the Pycon description, it states "A Pycon's clay flesh can be fully controlled, stretched, turned and twisted as long as it is attached to the head or nexus.".
This seems awfully similary to morphing for me. If I look at the description of morphing, I read "The user's flesh is pulled, twisted and shifted until it reached the desired layout." and "Just altering one's face to look like someone else requires much less power and Djed than morphing into a whale". From the replies in chat, I understand that it is possible to use morphing to actually transform the substance one is made of, as long as you keep it organical. However, that implies the ability to alter one's shape without changing the substance.
So is a Pycon's ability to change shape a subset of morphing? Or is it radically different, and why? Would it require training, experience? Or is it a completely innate ability, that can be used perfectly immediately?
Similary, if a Pycon's form changes with life-altering experiences, is that a conscious or a subconscious effect? Does a Pycon normally decide what he looks like, or does his shape reflect his experience without the Pycon consciously steering it?