MTG Artifact Deck istance?

Do not play 4 each of platinum angel and imperium. 2 each is plenty. Karn and Mycosynth golem are both illegal in type 2 as well as darksteel forge. Try using some of the 2 mana cost myrs. Add Darksteel Juggernaut to your deck, he is a monster. Myr reservoir is very good. A really good card to add to your artifact deck is Semblance Anvil, if you imprint an artifact on it, it reduces the cost of all artifacts you play by 2.