Only copy an {Indomitable Archangel} with a {Phyrexian Metamorph} in a full artifact deck ^^
Better if u equip the copy with a {Darksteel Plate} and you have other indestructible artifact like {Darksteel Citadel} to prevent lose the combo with things like {Damnation}.
doesn't this end up being a fullblown deck idea?