I build a little proxied up deck to try out an idea. It's hilarious, but scary. You just power him out with Chrome Mox, Mox Opal, Voltaic Key, Grim Monolith, and crap like that and start wailing on people. When you start sending 5/5's over to people on turn 2, now that's funny. Turn 3 obviously is simple enough. It's actually kind of scary. Just burn him up sending over 5/5's and most decks don't really handle that all that well. Use him every other turn and he's still pretty good, just not as stupidly explosive.

It may not be consistent or even good at all, but it does kind of show you what can be done. I kind of like this guy and I'll call him good enough for Legacy. He's just going to be only good in a really heavy artifact build. I will probably end up using him in a deck with Humility since I have a thing for pissing people off with rules complications.

Oh and he's pretty damned amazing if you can hit a Etched Champion then drop another Artifact to metalcraft him.