Shōinjutsu

Shōinjutsu (正印術; Literally meaning "Precise Seal Techniques") are a unique variant on the slightly more modern, developed recently by Samiya of Sunagakure. In a similar vein to common Fūinjutsu, the user is capable of sealing elemental techniques, chakra, beasts, and the like within the marks created by the individual. Subsequently, the user places a "timer" on the said seal through a process whereby the user doesn't allow the chakra to interact with the surrounding environment until specific conditions are met. Upon meeting these conditions, the seals are known to be capable of manifesting by themselves, performing the desired effects with no conscious effort by the user. However, the rarity of this art is extreme, considering its recent development.