unmecha replied to your post: what
hey wait a minute, wasn’t there a rule about this????
he actually appeared to pull this off just through sheer force of will
like the “cat changing into cars” thing is a cognition on his existence as a whole, but as a fully realised Velvet Room entity i guess he has some ability to alter the cognition on himself if need be
i assume its something similar with Lavenza apparently being able to split herself back into Caroline and Justine and recombine at will - Caroline and Justine are another cognition of the entity that makes up Lavenza, so she can swap between one body and two now that shes been re-assembled
Morgana just had to force this one - likely helped along by the altered reality capable of granting anyones desires they happened to be in at the time, i dunno if he would still be able to use it if he ever got his Metaverse form back