Nothing is more important in Magic than reliably playing lands and guaranteeing you have enough mana to fuel the later stages of the game, and these versatile cards keep you from falling behind
In terms of special versions of cards, I dont think anythings going to top being able to get a grand for the foil Japanese alternate-art Liliana, Dreadhorde General as spotted on eBay, but I think Oko has a shot to be the new champion
Well see if my experience with this card verifies or contradicts that opinion
In a similar vein, there are a whole bunch of lands that cycle now and many of them are well worth putting in your deck to improve your early land drops: Ikoria: Lair of Behemoths brought an incredible new cycle of cycling lands that revolutionized Commander manabases: There were already cycles of cards like Opulent Palace and Arcane Sanctum that are amazing color-fixers because they tap for one of three different types of mana in exchange for entering the battlefield tapped
Suspend takes the edge off and lets you use Ith the turn it comes down
Cards where timing matters Some cards are powerful only when cast at the exact right time
