Armillary Sphere, Travelers Amulet, and other artifact-based ramp provide both fixing and synergy
"But most of the holos are going to have silvering across the top and the right side of the border." In terms of the common issues found on these cards, Browning notes that it's mostly "surface condition versus edge wear and factory nicks." For example, besides the aforementioned silvering, he often sees print lines on the cards as well
Passive Value Engines Mystic Remora, Rhystic Study, and Smothering Tithe are classic passive value engines in cEDH: Theyre enchantments that generate huge advantages simply by existing
I strongly urge you to give this deck a shot, because its legitimately very competitive in the current Modern meta
Keep in mind that you untap all your creatures when it enters the battlefield, not just what attacked, so any creatures with activated abilities can get extra activations