Its an interesting way to balance equipment and make them useable as soon as they enter the battlefield
Mana-ramping is insanely powerful, and having a creature -- with all the benefits of the creature -- also double as a way to generate resources is really good
However, unlike the previous rarities, these cards will not appear in standard booster packs
Even with multiple reprints, with the most recent being the Enchanting Tales version from Wilds of Eldraine, this is because it's a powerhouse of a card
Collider has revealed four of them, while The Darkness Crystal was revealed back at PAX East
This ensures youre getting new cards to play with for as long as possible, and youll still be rewarded even once you finish your collection