That's exciting even if the math says the chance of getting that money is infinitesimally small
You can play the lock combo of Karn, the Great Creator and Mycosynth Lattice for free, drop crazy stax pieces like God-Pharaoh's Statue or Wandering Archaic, or keep it simple by casting free eldrazi like Ulamog, the Ceaseless Hunger and Kozilek, Butcher of Truth
History of Benalia, the example above, enters the battlefield with a lore counter on it, triggering chapter I (creating a 2/2 White Knight creature token with vigilance)
If you happen to be building a strict theme deck, you will probably want to dip into almost all of these cards, as well as Might of Oaks (the Urza's Legacy, version), Monstrous Growth (the Portal Second Age, version), and the amazing Squirrel cards before Odyssey
Interestingly, both of the Dwarf Fortress creators in the video opened this as their bonus card, which could imply that its a guaranteed bonus and not a rare one