For the mana, I think I've been hoping some of the indirect mana sources (blink or reanimate Lobelia Sackville-Baggins, steal mana rock with Yuffie, Materia Hunter, even out land advantage with Knight of the White Orchid, etc) would play out, but I definitely see what you mean
Rarity: M #: 402 Card Type: Enchantment Flavor: Let the dragonstorms rage
Even if an opponent fires off a Teferi's Protection to save them, you can just create an arbitrarily large Ballista and shoot that player down when they phase back in
Brawl Legal Vintage Legal Timeless Legal Commander Legal Pauper Not Legal Oathbreaker Legal Penny Legal Toolbox Notes and Rules Information for Gift of Estates: Gift of Estates does nothing if each of your opponents has the same number of lands or fewer as you
The same largely goes for Duskmourn: House of Horror 's Commander decks, save for this one
Players have been discussing which way to build this deck, either Mirage Gate [Lost Origin] or Arceus VSTAR [Brilliant Stars], but this card is certainly going to see some success