Untaidake having so many restrictions is indicative of how careful R&D can be when creating lands which produce multiple mana, though its an example of a card so thoroughly underpowered, that its essentially unplayabale outside of EDH and the Legendary Cube
So I think that we may fall prey to board stalls in which the creatures youre eternalizing are just not going to be able to compete with with the rest of the table
The format remains fringe, but if it becomes as well-established as something like Pauper, we may see more movement on the Reserved List cards that actually see play in it like Phyrexian Dreadnaught and Gaeas Cradle , as well as staples for more budget decks like Pyroblast in Burn
Whenever an opponent discards a land card, add to your mana pool
Llanowar Elves has recently sold out of every copy under $700, so while it had a dip at one point, the trend is clear and its not like anyone is mass-cracking Foundations at this point