Wood Release: Four-Pillar Prison Technique

==== Ninjutsu (Wood) ====
Level: 	A (8)
Hand Seals: 	Ram → Ox → Boar → Snake
Casting Time:	Instantaneous
Range: 	Short-range
Area: 	15ft
Duration: 	4 Rounds
Saving Throw 	Reflex Safe
The user converts chakra into timber under the ground and lets it grow rapidly while forming it into a wooden prison. The size of the prison is based on the user's imagination. From an insect cage to a great prison, one can make it into whatever they want by regulating the amount of chakra used. The timber itself is treated with a chakra coating, making its destruction extremely difficult. During war, it has the great ability to detain prisoners, but it can also be used as a disciplinary measure for quarrelling subordinates.