It is somewhat of an honorary inclusion on this list as it so often feels like Upheaval is unbeatable for you yet the game is 100% yours if they don't have it
Inverter and U/W Control decks were already sort of in the market for cycling lands, and adding triomes can give the marginal upside of being able to Explosives for three, while also allowing those decks to up their land count to stick their otherwise inconsistent colors (something they cant do currently due to need for answer density) Thopter/Sword combo and Urza may not exist in Pioneer, which greatly suppresses the cards power, but it could help decks like Ensoul Artifact get back on stable footing
That's a boatload of free mana, no pun intended.
The number of cards each opponent discards is calculated as Kozilek's first ability resolves
Gengar collectors are especially passionate, whether they're chasing card artwork, Poke plush, or High End Graded Pokmon cards
Well the short answer is that you don't