The Bladed Maw is a vast hurricane in the far reaches of Natura's Void, an eternal tempest strewn with the wreckage of an Adversary's metal traps and creations. Lightning continually flashes in its depths and coruscates its edges with brilliant light.
All who attempt to traverse the Maw - either inward to the Antithetical Gate at its heart, or outward from the Gate to Natura - are marked by it: the blades and debris rake them, or lightning strikes them. Aizea will know them no matter their form, by the marks left by the Maw.