Forged in the catastrophic moment of the Arcane Fracture's initial explosion, the Omnibus Sigil crystallized as reality's desperate attempt to preserve the original unified magical language before it scattered across ten chaotic realms. This singular artifact contains compressed fragments of every magical school that would eventually emerge from the Fracture's chaos, making it both a historical record of magic's pre-Fracture state and a prophetic blueprint for its eventual reunification.

The Omnibus Sigil manifests as a translucent crystalline disc whose surface continuously rewrites itself with shifting inscriptions from all ten realms, the glyphs appearing and dissolving in harmonic cycles that mirror the Fracture's own chaotic rhythms. The artifact possesses reality-bending weight that fluctuates based on the wielder's magical comprehension, becoming lighter as understanding deepens, while its dimensional phase-shifting nature allows it to exist simultaneously across multiple realm boundaries. When activated, it resonates with harmonic frequencies that can temporarily synchronize the most violently opposed magical energies, creating brief windows of absolute magical clarity.

The Omnibus Sigil functions as the prophesied key to the eventual reunification of all fractured magical schools, serving as both the roadmap and catalyst for reconstructing the original unified arcane system that existed before the catastrophic Fracture shattered reality into competing domains.