I replaced Depth-Charge Colossus with Maelstrom Colossus which is colorless, so blue needs an extra card. Keeper of the Cadence was terrible but I like the idea of a deck existing which can outlast the rest by shuffling its graveyard back into its library (which will also increase the ratio of spells to lands, as your lands are probably on the battlefield and not in your graveyard, improving your future draws).

Alternatively, Clear the Mind can be used to put your opponent's unearth creatures back in their libraries.

For now this seems like the best solution to improve the ratio of Uncommon to Rare/Mythic Retro Artifacts in packs.

Walking back replacing this land, although I am swapping in 1 evolving wilds for it.

Not certain if I should be replacing Tocasia's Dig Site, as it is bad but I don't think it's unplayable. The same is true of goblin firebomb.

Most of these cards were too unimpactful to be worth including, and the rest were too slow for this assertive format.