The theory behind curled foils is that humidity changes the fibers of the cardboard, causing it to bend, expand, or contract based on how much moisture is on the card
Think of all of the turns of protection that a humble 1-drop Wall has just bought you
Pretty straightforward
And last, but certainly not least, are the Oltec, the living ancestors of the Sun Empire who live in a highly advanced communal society with a direct connection to their gods, as Miguel Lopez, a world-building designer on the expansion, described them in a presentation
Why Logan Pauls Pokmon Card is Worth So Much
Combine that with something like Gaeas Cradle (a land that taps to provide one green mana for every creature you control), and youre looking at an explosion of mana very quickly