Energy comes in two main flavors Basic Energy cards and Special Energy cards
A land that replaces itself with a card can be effective in the late game to mitigate flood and find that last card you need, but taking damage every time you tap for mana adds up quickly
I would round out the broken list with Sol Ring, Library of Alexandria, Mana Vault, Mana Crypt, and Ancestral Recall
It would have over-complicated the interface by adding features such as these, and so the decision was taken to keep additional elements, like code redemption options, outside the app itself
Not only did the design team work closely together
From a battle perspective, this card isn't quite as good as the other alternate art secret Eevee evolution VMAX cards, but its ability does help to make up for its double-edged attack