Cards Realm has a virtual booster opening simulator for Outlaws of Thunder Junction with realistic, rarity-weighted pulls
While this is certainly easier to do in 4 color partner builds or 5 color decks, as those mana bases usually need to lean almost exclusively on basic lands to ensure consistent access to all colors, there are more than enough nonbasic lands out there at this point that you could play this instant speed tutor in any deck containing black
They are mainly useful for deterministic combo loops where the same prompts, priority passes, targets, mana choices, and stack-order decisions repeat several times
Bitter Reunion is a cheap way to discard a card and draw two cards upon its entry
Whether this is because of the format becoming more focused on low mana value cards or more answers existing to combat stolen creatures, I personally see this as a good thing