Thunder God's Decree

Thunder God's Decree is a Zeppin owned by ???.

Overview
Thunder God's Decree is a zeppin originated from Grasse as such it does not follow the conventional naming of zeppin. Furthermore because of it's island of location it is one of the zeppin who have not only been affected by the Kyousha Kyousha no Mi but also by the Don Don no Mi, making it's effects appear much more flashy and magical than they should.

Because it is a zeppin it manifests various traits of life forms, the traits for Boom are:


 * The electricity production of an eel
 * The permanent growth of a lobster
 * The growth speed of kelp
 * The retraction ability of snails
 * The responsiveness to stimuli of a rat

These attributes collectively allow the sword to infinitely grow longer and channel electricity through the blade. Additionally it was given the ability to retract into it's handle to keep it from expanding indefinitely outward.

Command

 * Extend Thunder God's Decree- The only offensive command the sword exhibits, by wording this Thunder God's Decree will begin to extend a given length at incredibly speed. This move can be used to spear through opponents or be used in conjunction with swings of the sword.
 * Retract- The follow up command that orders the extended blade to retract back to it's original size.