Blood Moon, Relic of Progenitus, Nihil Spellbomb, Ancient Grudge, Timely Reinforcements, Leyline of the Void and Leyline of Sanctity, and even Fulminator Mage are all well-known as proper answers to some of the poles of the format, with a time and a place for each of them in the right metagame
Thankfully the non-black decks in the format are much more reasonably priced, with several in the $100 to $200 price range, although just how competitive these decks are remains to be seen
When people outline what matters most, they typically list trust signals: audited randomness, licensure from known authorities, and explicit tools that empower selfcontrol
It tends to show up with commanders like Eriette of the Charmed Apple, Aminatou, Veil Piercer, and Light-Paws, Emperor's Voice, and its very close to an auto-include with the latter
Virtue of Persistence Virtue of Persistence is Debtors' Knell, a card that used to be good enough to have an entire strategy built around it