Board Thread:Episode Discussion/@comment-1599757-20151212162645/@comment-24993958-20151222104152

ChaosSpud wrote:

Mercury - controlled hallucination. The problem with that is that semblances are an active use of aura, something he specifically didn’t have any left and we KNOW that’s a fact cause we got to see his aura shatter…we even have confirmation by the crew that that’s what it was.

The distinct sound Yang heard before the blondie comment came AFTER Merc’s aura was 0…he could have possibly did a loophole abuse and lodged some of his aura into Yang prior to the KO, but we don’t have confirmation yet that something like that would even work. So far odds are that whatever happened to Yang was not done by Merc.