While Ratchet Bomb isnt a Modern staple, it does see play, often in colorless decks lacking removal options, as a Karn, the Great Creator tutor target or in mono-colored decks that cant easily power up Engineered Explosives as an answer to Urza's Saga tokens
That locked out all but the most well-off or lucky players
6 Jace, Wielder of Mysteries War of the Spark introduced static abilities on Planeswalker cards, which made Jace, Wielder of Mysteries an alternative win condition for some decks
Other Significant Misprints/Errors This category includes various other errors, such as wrong back, wrong front, or double prints
The most impressive reprints, however, come in the form of Jeskas Will and Stolen Strategy
Heres the cheeky answer: why not both