I’m really not sure about this one, especially given how wordy it came out. Originally it was going to be an artifact clone, but then it would need all kinds of special rules to avoid the Legend rule again. I tried to think of a way that it could only be untapped while what it copied was tapped and vice versa, but that didn’t really work out as anything interesting. So instead it gets its powers based on who or what it copies. Weirdly, it doesn’t get flying if it copies Jade right now.
I probably will wind up rewriting this but here it is for now.