It's still a rare, and it's still great in mono-black Commander decks alongside more common sweepers, like Damnation and Toxic Deluge, so it remains one of the most valuable cards in the set
In most cards, the bigger the drawback is, the bigger the value generated is
Comeuppance Unlike most fogs, Comeuppance prevents all damage, not just combat damage, which is pretty helpful
These are some of the neatest cards in the set, and I'm going to rank them from least to most relevant in EDH
Obviously, you dont really want to give up a real creature for the effect all the time, otherwise it is a roundabout way of rummaging, but recurring removal spells is especially potent, and giving up a creature for that is often going to be worth it, especially if you sacrifice a card that brings you some value when it dies