(ooc: Rarely yes, but Illusions make it easier to do xD) He probably wouldn't have noticed the chair go right through the fake griffon then, and then it vanishing, the clone enters, "Well, that was," he pauses, "More extreme then I expected," he speaks, starting to head for the basement himself.
The workshop is silent. Completely. Maybe the wheels of the fallen chair do some noise, but other than that, nothing. The pseudo-unicorn can notice that the basement door are closed shut, with no sound coming from the other side either.