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@Dead Cruiser: I'm not so sure about this. You don't really go into his abilities very much, so with the vague nod to his sealing spells, he's either overpowered or underpowered, it's hard to tell. Blank Canvas edges into an area I don't really like in RPs(perfect ability copying) as well as making him kind of ineffective if it's his primary combat ability given its limitations.
@Savo: "Programming" a homunculus is one of the reasons to even make them, along with the ability to determine physical capabilities. It's essentially custom-making a human, with all the skills and physical traits you want. You can make them, from the moment they're alive, instinctively know how to do things with the same level of skill as someone who has trained their whole life. You can make killing come to someone as naturally as breathing. Messing up during creation of a homunculus can have some pretty horrible results, though.
Also the transfer would have to have happened very, very quickly, since the soul lingers around the corpse for faaaaar longer than the consciousness part does.

@Dead Cruiser: I think there's something I'm not getting here, because I'm just sort of confused. ^^;
@Savo: Well, the programming has to happen afterwards. It's important for the setting that you can't actually apply the same sort of thing to a living human's mind but it'd be easy enough to say it was done after moving the consciousness and soul but before he was awakened.
Edit: Also Shi's picture has been updated.
@Dead Cruiser: I'm... not so sure about this. Being able to lock down anything like that seems really easy to abuse. Couldn't he just make it impossible for someone to breath? Or just constantly lock down anything they try and do?
Also, shouldn't he know Displacement? I mean, given what he did.
@Savo: He looks good now, though I'm not completely sure why the mage decided to transfer the consciousness unless you're going for "I want to lord it over him while removing enough memories to make him not understand why" like I thought you initially were. ^^;
It's pending. He can exist but for now as an NPC in the background.