paramount war one piece booster box Card OPK-02 TCG Korean ver. – Pokioh super rare One Piece Paramount War Booster

One of these complex cards makes its debut in White Flare, as Hydreigon ex is among the most intriguing options in the set

Silent Paladin X LIGHT Level 4 [ Fairy / Effect ] ATK 500 DEF 1500 When this card is Normal Summoned: You can add 1 "Silent Swordsman LV3" or "Silent Magician LV4" from your Deck to your hand

Perhaps this may feel cheat-y as the card is obviously promotional and not intended to be a real card to be played in a deck, but as far as I'm aware, it's a card that exists and saw print, so it counts

For Unglued 2 (the set that never got madeyou can read more about it here and here), I messed around with a mechanic where there were left sides and right sides of cards, basically B.F.M

ACE Overflow "-4" (When this card could move from the battle area or under a card to another area, lose 4 memory.)