The Sword that Gawns the World Tree Nidhogg

Suho's weapon shows itself as eight oversized daggers, each sheathed in pure white shadow. The blades do not sit in a fixed hand. Instead they circle their wielder at blistering speed, forming a vortex whose rotation keeps building until the whirling cluster takes on the look of an enormous saw. The effect marries the form of thrown daggers to the threat of a single tearing engine of shadow and light.

This is a weapon of unadulterated destruction, strong enough to stand against World Predation, the Jaws of Nothingness that the Itarim of Dimension-1 itself created. Its power rises from the merger of two separate sources, which gives the blades the force needed to challenge something authored by a god rather than shaped at a mortal forge.

Sung Suho called the weapon into existence over the course of the Outer God War Arc. Confronting the Itarim of Dimension-1, he fed the strength of Shadow Nidhogg into his existing daggers, Kamish's Wrath, using the Shadow Extraction Form Change skill to draw the serpent's essence directly into the blades. Nidhogg's eight heads were swept into a swirl of shadow and radiance, and the daggers settled into this new shape. Later, while Antares possessed him, Suho funneled all the wild flame inside him into Shadow Nidhogg. As the serpent's power and the Dragon King's became one, that union produced his god-slaying ultimate weapon, the Ragnarok blade. Its full title casts it as a Shadow of Destruction and, in the same breath, the Flame said to gnaw at the gods.