Auton Soldier

You may have Auton Soldier enter the battlefield
as a copy of any creature on the battlefield, except
it isn't legendary, is an artifact in addition to its
other types, and has myriad. (Whenever it attacks,
for each opponent other than defending player, you
may create a token copy that's tapped and attacking
that player or a planeswalker they control. Exile the
tokens at end of combat.)