Card Trivia:Hidden Armory
- The swords and samurai armor in this card's artwork also appear in the artwork of "Armory Call".
- This two cards have very similar Japanese names; アームズ・ホール (Āmuzu Hōru) and アームズ・コール (Āmuzu Kōru), meaning "Arms Hole" and "Arms Call" respectively.
- The armor on the right looks like a traditional knight's armor from the Middle Ages, while the one on the left looks like a traditional samurai armor.
- This card could be considered a reference to "hammerspace", a notional extradimensional space used to explain where comic, animated and video game characters keep various objects when not in use.
