[orangejuicetang]

The biggest problem with this is that if it can't be initiated against the user's will, how the hell is Pride going to make Goldtooth do it? There's quite a few factors here that are out of place if Goldtooth is the one doing the transmuting. First, Pride can't mindcontrol people, so if it is dependent on the will of the alchemist, than Goldtooth still wouldn't be able to use it. He could physically control Al's body by using it as a puppet of sorts. Nothing about controlling his mind. Next, can Homonculus use alchemy? If they could, then they wouldn't have to go through all the trouble of getting five sacrifices. Just get five homonculus to do it, or eat an alchemist and than to it if that's what it takes. Also, everybody who hasn't seen the truth has to actually touch the transmutation circle with their hand in order to transmute. Goldtooth is in the air. There's a reason that Bradley pinned Roy's arm in the center of the transmutation circle instead of just killing him.

Oh, and while rereading the chapter, just before the transmutation happens, Pride looks at Roy and says, "This is the fifth one", and Bradley, who is literally right above Roy, confirms with "The last one."