The Moxen were iconic and expensive cards at the time they were banned, and removing them from the card pool was intended to combat the notion that Commander is a prohibitively expensive and inaccessible format
The effect cannot be stacked, so you can't earn more lore than the cost of one item, but you can decide which item in play you use
The other part is a permanenta land, in this case
Notably, this list isn't in any particular order, and we'll only be looking at new cards, one from each ink color
4 Titania, Protector Of Argoth Futureshifted Frame - $221.12 An incredibly powerful legendary creature from Dominarias ancient history, Titania, Protector of Argoth has popped up a few times in Magics modern history, with this iteration being particularly strong
2 Scar: Vicious Cheater 125/204, Ruby Scar: Vicious Cheater is an especially aggressive Disney Lorcana: Rise of the Floodborn card