Cards are disposable Mana storage tools, inscribed with a magic array and charged with Mana, which works similar to a simple cartridge, and does not require combustion within a Device. It is believed that each card is charged using the owner's Mana over a long period of time, and then saved in this form.[1]


  1. ^ Magical Girl Lyrical Nanoha A's DVD 4 Booklet (translation).

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.