2.5% chance it becomes an Ultra Rare
Pokemon cards released in the 1990s have been released and revised for a long time, and are still very popular as of 2021
As popular as Set Boosters were, they forced stores to make a choice between Set and Draft boosters when buying inventory from their distributors, which often meant choosing Set Boosters over Draft BoostersRosewater went so far as to frame that shift as the abandonment of Draft Boosters. But Wizards couldnt simply drop Draft Boosters in favor of Set Boosters because Magic as game relies on Limited (both Draft and Sealed) to balance its ecosystem
What Types of Boosters Are They Found In
Red decks need their removal to be able to go directly to the face, which is the one thing you cannot Terminate, and while being cheap is nice, the creatures you need Terminate for don't come out fast enough to reward you much for it being so cheap
But if they do, they can pull off very powerful effects