Casting Assistant Device (CAD)

Casting Assistant Device (術式補助演算機), better known as CAD (シーエーディー) is a spell support processor. Magicians also call them Device (デバイス) or Assistance (アシスタンス), and, in Japan, Magic Operator. It is a machine produced by Magical Engineering.

This device incorporates synthetic materials that convert psion signals into electric signals, uses the psion from a magic ritual to produce a collection of electronic magic—the activation sequence.

CAD allows the processing of all the necessary components for magic in a single moment. In detail, these devices help accelerate the invocation of magic, as well as stability.

These replace tools such as spell chants, talismans, hand seals, magic circles, magic tomes and other traditional methods of invoking magic. It is a tool of necessity for any modern Magic Technician.