A four-mana Sultai Commander, Sidisi states that whenever it enters the battlefield or attacks, its controller mills three cards
She had no idea if she was successful, but she was still having thoughts, which meant she was alive, which must have meant something good happened
When Riku copies creatures or you cast a token-making spell, Parallel Lives and Doubling Season double those
With the mana base changes we discussed, I think the answer is yes, assuming you're looking for something spicy, unique, and semi-competitive
modal lands that bounce themselves or other cards so players can make use of the spell side once they have enough lands
This type of deck loves a little self-mill to get it going, while also having plenty of ramp to be able to recast those cards