While we do have cards like Dryad of the Ilysian Grove, Chromatic Lantern, and Chromatic Orrery to fix our mana, we cant rely on finding 3 cards out of 100 to help with this
The one that isn't cycling
This deck can also tap into its "aristocrats" side, sacrificing Goblins to make extra mana, deal damage, and more
Or some of the best combos come from pairing with white and adding self bouncing enchantments like Flickering Ward and Conviction
Those are three important cards across several different formats, and it's created a lot of anticipation for the Mystical Archive when it releases
As with most Prowess decks, this added option hugely increases the decks viability