Keiro e Eden

Keiro e Eden (径路へエデン Keiro e Eden, literally Path to Eden,) sometimes called Eden for short, is a katana owned by Marine Captain, Garde. Unlike most swords however, Keiro e Eden stands out for having been fed a Zoan class Devil Fruit. In this case, Keiro e Eden has eaten the Snake Snake Fruit, Model: Spitting Cobra, making it a snake-sword; a weapon which Garde makes deadly use of.

Appearance
Come on! Tell us what it looks like! Does it look Sinister? Cool Pirate design? Shiny? It's too bright!!! Any decoration? Is it on fire? HOT!

Abilities and Powers
So is it your typical weapon?

Higher grade? Magical powers? Turns into a creature that strike all those who dare to mock it?

History
So........how, what or who made it? How did it come in into your character's possession? Used for good or evil?

Trivia

 * Keiro e Eden received its name as a reference towards the Garden of Eden, from the biblical Book of Genesis. On one hand, it can refer to the snake (assumed to have been the Devil) who had tempted Eve to eat the fruit from the Tree of Knowledge, as Keiro e Eden can transform into a snake at will. On the other hand, it may also be a straight up reference to Eden itself. Eden has become synonymous with paradise in modern times; a land with no pain, suffering or hardship. As a Marine who's job it is to uphold justice and punish criminals, it could be said that Garde brings the world closer to Eden with her very sword.
 * Likewise, Keiro e Eden's name takes on an ironic twist when one considers that Garde was trained under Aanya, a Vice Admiral known commonly as "Seraph," and who seems to have an angelic motif surrounding her. Despite this, Keiro e Eden carries a malevolent, devilish undertone due to the serpent of the Garden of Eden.