A Plane Gate stood above the Despair Valley laboratory, drawing its magical energy from the valley itself. It resembled an ancient bronze doorway covered in intricate magical diagrams. A relief of a griffin-like magic creature adorned its surface, holding a bronze ring in its beak. Inscribed on the ring was a line of ancient magical script that Locke recognized: [When this gate opens, the end of the world will come.]
The magical gate had opened a crack. Beyond it lay a world burning with black flames, and the eyes of a dark figure appeared behind the door.
Wizard Gelang swallowed as he looked at the gate. "Black magic—the Gate of Doom. One of the most notorious spells of the Summoning School, and one of Rain-Marsh's own black magic spells."
"By sacrificing three Star-Ring Wizards, you can summon the Gate of Doom here. But there's a problem: how did this gate appear? Ever since your Golden Crown Mountain investigation team arrived, no one should have had a chance to do this. No, wait. The Gate of Doom can summon power capable of destroying a world. In the Wizarding World, that means it can summon enough power to destroy an entire Wizard Land. The Maupassant Family would never leave something this dangerous here. In other words, this Gate of Doom must have been inside the Despair Valley laboratory all along."
Wizard Kent was stunned. He merely liked making the members of his research group compete fiercely with one another; he had never expected anything like this. Locke quickly checked the records. The doom Plane Gate required sacrificing several Star-Ring Wizards, using the repeated breaking of their Star Rings as the ritual price to summon power capable of destroying a relatively large [world].
It was classified as black magic of the Summoning School