Double Medium

Double Medium is a fictional combat technique in the manga and anime by Hiroyuki Takei,Shaman King.

Introduction

Double Medium is a technique that is required of a shaman if, after merging with his guardian spirit, the flow of energy he is trying to externalize is too great. He will lose control over his Furyoku ("furyoku" is a shaman's energy, which he uses to form Oversoul and the giant form), which will start to burn very fast. He must then use another weapon, and, in the same way that the Shaman's soul and that of his Guardian Spirit are joint, combine the mediums in one large weapon. Thus, the Shaman can fully tap into his Furyoku potential, and deal much more damage over a bigger radius.

This technique, as can be imagined, can and did bring down great foes in the Shaman Fight. However, it is not by any means the greatest and most powerful technique know to Shamankind. Indeed it was improved through Mikihisa Asakura's Spirit Reduction (unofficial name) technique, and bested through The Great Spirit's powers.

Usage

In the anime, Yoh Asakura is the only one who achieves a "double medium". He invokes his guardian ghost, Amidamaru, into his katana (Harusame), and then into the Antiquity (the Futsunamitama). This causes him to have a large, glowing, blue katana with a shielded hilt in the colour of Amidamaru's armour, slightly similar to his Over Soul form. He managed to learn this technique himself, unlike the Over Soul and the Giant form which he learnt respectively from Silva and the Chou Senji Ryakketsu (the Great Book of Shaman written by the original Hao Asakura), brought to Yoh by Anna.