Karn the Artificer (EDH / Commander) [Revisión 52]

This deck is my attempt to create a casual-viable commander deck that leans into Karn as the Commander of Artifacts. The constraints for the deck were the following:

1) Karn had to be commander
2) Deck needed to be commander legal
3) Deck could only consist of artifacts, legal lands (colorless), and Karn cards (Example Karn Planeswalkers were allowable)

One consideration I did not achieve in the deck is a pure control style to further emphasize Karn's temporary, but important vow to pacifism.

Feedback welcome, some areas of focus for me as I refine this deck:

1) Any way to up the pacifism of the deck and remain strong at winning? (Example: Cityscape Leveler is not very pacifist)
2) Mana curving better (example: Quicksilver Amulet doesn't actually have that many efficient targets, but is Thran Temporal Gateway really worth it to help get out the expensive artifacts, even if it is better than the amulet?)
3) Mana rock optimization (Other than buying the $100+ cards, how best to optimize for rocks?)

Excited to play more and refine over time. Good luck in your games!