Name: Hephaestus' Forge
Rank: S
Jutsu Type: Ninjutsu
Element: Fire/ Iron Sand
Duration/Cooldown: 4 Posts l 6 Post Cooldown
Range: 40 meters
Appearance: Five walls erect around the user and those in the vicinity of the user, closing them inside a large iron box.
What it does: The user channels an immense amount of iron sand into the ground around him and his opponent, the sand spreading underneath the ground in the form of a box. Once ready the user can spring the trap causing the four colossal walls to come forth and close in both the user and the opponent. For logistical reasons each wall of the box is perfectly even with the other and all of the walls come up at the same time. Once the box is finished and closed, the whole area within the walls is set ablaze with the users chakra, creating a burning furnace. While the user is immune to the flames of the furnace, the opponent must have health one rank below (and above) this technique in order to survive the flames. While in this forge however, the user can create forms of Iron Sand creations as long as they have the reserves to do so.
Wordcount to learn: 4000
Bonus Requirements: Dusk exclusive, Iron Sand
(add if it is meant for a specific character here)
Backstory: One of the collaboration techniques born of his use of Iron Sand and his Fire affinity, Dusk created this jutsu in order to show his superiority when it came to effectively creating jutsu that had more than one use and used the art of deception and surprise rather than destruction.