I have always had a soft spot for Magic: The Gathering 's original Ixalan block (yes, back when stories and sets still transpired across a block)
Youll rip the card
Obviously this again depends on the use case of your cube but i would make the argument that for a 100% drafted cube having 3-5% powerful sideboard specific cards would improve the overall play and drafting experience vs 0%
There is a total of 20 different bonus cards available that vary in value, and each one has the same odds of showing up in your product
Since Y'shtola repeatedly damages each opponent, cards that trigger off noncombat damage such as Curiosity, Ophidian Eye, Tandem Lookout, Helm of the Ghastlord, and Sigil of Sleep are powerhouses that quickly take over the game
instead of choosing one of three options, you get to choose two of three options a supreme upgrade, especially when one of the options is drawing two cards