Wood Release: Great Forest Technique[1]
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Name
Kanji	木遁・大樹林の術
Rōmaji	Mokuton: Daijurin no Jutsu
Literal English	Wood Release: Great Forest Technique
English TV	Wood Style: Giant Forest Jutsu
Debut
Manga	Chapter #309
Anime	Naruto Shippūden Episode #53
Movie	Naruto Shippūden 4: The Lost Tower
Game	Naruto Shippūden: Ultimate Ninja Heroes 3
Appears in	Anime, Manga, Game and Movie
Data
Classification	Kekkei Genkai, Ninjutsu
Type	Wood Release
Class	Offensive, Defensive
Range	All ranges
Hand seals	Tiger → Horse → Tiger → Snake
Derived jutsu
Users Yamato Hashirama Senju (Anime only)

A technique that changes one's own arm into big trees. Using chakra, the tissues are transformed into trees at the cellular level. Then, by activating the trees, stimulating them to grow rapidly, they lengthen at high speed and fork into many branches. It is possible to capture the enemy with these branches and at the same time, if one changes the ends into sharp stakes, turn them into countless, sharp, spear-like piercing weapons.

Yamato also used this technique to infiltrate Orochimaru's hideout. After finding a small crack in the wall, the wood squeezed into the hole and grew into a square shape which increase the size of the hole so that he and his team could pass through.^[2]

References

1. ↑ Third Databook, page 306
2. ↑ Naruto chapter 302, page 7