Fill your deck up with discard effects like Demand Answers, a few super-cheap artifacts like Tormod's Crypt, and then a ton of huge, game-winning effects: Portal to Phyrexia, Threefold Thunderhulk, Platinum Angel, Wurmcoil Engine, the works
And transforming it is very dependent on the boardstate
There is also a significant cheaper option of just $500,000, a one of a kind, 2001 Tropical Wind Trophy Card
Its unlikely well see another set like Theros Beyond Death given how it damaged the health of the game, so expect these cards to rise in value over time
Its especially ideal if you're drawn to lore-heavy TCGs and want to start in a space with strong resale value and deep traditions
If you wanted a Mana Crypt, you had to get it by mailing in a form you got when you purchased a book