Nazaru seed

Description
The Nazaru seed is a seed that contains life essence that gives a full year's harvest in exchange for one life of a person who benefits from the harvest.

It was created after a Mushi Master sealed the Mushi Light Pulse inside it. It can be thus used for Immortality and Resuscitaion.

Weakness
If it is buried in the path of the Light Vein it looses its shape and is destroyed.