Seems like an interesting strategy to explore more thoroughly
Whether it falls under the categories of artifact, battle, conspiracy, creature,dungeon,enchantment,instant, or land
Anthem was always dependent on a lot of white mana
With its thousands of cards, experimental mechanics, and player ingenuity, it is impossible for Wizards of the Coast's R&D team to account for the nearly-infinite possibilities for any card
(Quick little factoid: Urza's head is one of only a small handful of characters to show up in three different Un- sets.) Urza then showed up as a legendary creature called Urza, Lord High Artificer in Modern Horizons (this portrayed him prior to his spark igniting)
Now, if you can just find a Dark Ritual and a Skirge Familiar, you can convert your life to cards and cards to mana efficiently