The Favonius Codex is an elegant, book-like weapon with a hardcover binding that features intricate gold embossing of the Knights of Favonius emblem. The cover is made of a dark blue leather with a slight sheen, accented by silver trim along the edges. The pages appear to be made of a magical parchment that glows faintly when the codex is in use, suggesting its connection to elemental powers. The book is held together by a sturdy metal clasp that bears a simple yet ornate design, reflecting its noble origins.