Found a bug:
Sculptur didn't summon any scuptures for some reason. I don't quite remember the circumstances, but I had no other supporters when I bought it, and I had an Artificer rerolled to trigger adjacent follower start-of-combat effeccts twice.
Edit: I've disabled it again. There was no obvious answer, but I've rerolled a combat trait again, so that might be it no matter the outcome.