Ink Seal

Created by the 4th Hokage after gaining access to the 8 tail's Ink Creation Passive Ability, this technique allows one to configure pre-existing ink in the area into seal formula of a jutsu known by the user. Only one type of seal can be created per use but with enough ink and chakra multiple simultaneous copies are possible to form. This fūinjutsu is the basis for many large scale techniques which would otherwise be extremely difficult to pull off due to the size of the formulas required to enact them.