Bonds of the Twin Dragons (双竜の絆) is a special rule in Z/X -Zillions of enemy X- trading card game. With this rule, both player may put two Player cards on the Player Square at the start of the game instead of one. This rule were used in all official tournament during April 2013.
- Both player may choose to put only one Player card like usual.
- If two Player cards are put one the Player Square, all special ability that corresponds to each Player cards' name will takes effect.
- If it is difficult to put two Player cards on the Player Square at once, it is possible to put them on the side of the deck or any appropriate location considered as Player Square.
- Special Rule (Japanese)