I'm pretty sure this is a super inconsistent combo but I played against a guy on MtGO yesterday who pulled it off and I was like "whoa."
Dude got himself set up with defenders and {Axebane Guardian}. Tapped for a ton of mana, cast {Twinflame} to make extra copies of {Axebane Guardian} and others, used that mana to cast a {Mnemonic Wall}, get back {Twinflame}, cast {Twinflame} on more copies of {Axebane Guardian}, cast {Archaeomancer}, get back {Twinflame}, make more copies of {Axebane Guardian} AND {Archaeomancer}, get back {Twinflame}, etc. The end result is a beatdown by several dozen {Archaeomancer}s.
That's beautiful.
I turned my axebane guardian deck into pauper a while ago, but I used to {Cackling Counterpart} AG then populate him. Its not as hilarious, and no where near as powerful and fast as that crazy combo.