Oh, okay! Sorry about that, I misunderstood the skill then. Everything in the created room is 'unwanted', especially the smoke, so I thought that covered it! I didn't realize it was only for like, the primary section of liminal space itself and not created rooms.

Would Barrier be better to take in this case? That thread wasn't done for the sake of the skill, but rather we needed to 'break it up' and the skill was chosen for that purpose. In other words, I'm not actually set on Bubble - it just seemed to be the most convenient skill to take at that point. If that makes sense?

(Also re: teaching, I thought it just needed to be mentioned as being interested in or being used if you didn't have a specific "these two sat down and nutted it out" thread?

If it's not the case, then I can nix Archive Retrieval and probably take Cantrips instead - if mentions of reading up on Colour Magic are allowed for Cantrips? Or since he's a wizard already and doesn't specifically need Cantrips, can probably just take Colour Magic as the one with proof and then take either... Bubble or Barrier, whichever is the actually appropriate one for use in that other thread's context.)