Balance in All

One of the most powerful lessons the Isawa took from the Tao of Shinsei was a deeper understanding of the connection between the various Elements. With this insight, their gifted Void shugenja were able to manipulate these connections to further their spellcasting potential before exhausting themselves. Once this spell is cast, you may cast spells of any given Element as if they were a different Element - affecting the Ring that is used to roll it, the number of spells of that Element you may cast per day, and any relevant Affinity, Deficiency, or other mechanics. The GM should feel free to interpret how using different Elements for a spell might affect the spell in various ways - a Katana of Fire cast as an Air spell, for example, might create a blade of nearly invisible, burning wind.