yu gi oh gx jaden deck Yuki Midterm Paradox Mini Box expands on the Speed Duel GX Yugioh Jaden Yuki Hero Gx

This error type does not get much more dramatic than the example pictured above, from the Italian EX Crystal Guardians set

In fact, I can think of at least two other cards for which exactly one copy exists

Maxx "C"is a card that makes it easier to draw meta cards that are mainly inserted from the side

DEF 0 1+ Fish Tuners + 1+ non-Tuner monsters The original ATK of this card becomes 500 x the number of banished monsters

This card however would only increase the length of the game as it would allow a player to shuffle their discard deck back into their draw deck

They also mean you dont have to continually hold up your mana