Anesidora

Velvet's Weapon is Velvet Scarlatina's weapon of choice. According to Coco, Velvet's weapon is brand new and she has yet to use it in combat.

Description
The weapon appeared in episode 12 of the second volume of RWBY, but it was not used.

Velvet stores her weapon in small box that she keeps slung from her shoulder. The box is a large wooden chest. Golden metal bands cover the edges and Velvet's heart emblem is imprinted on the front. The box itself is about the size of Coco's Handbag.

During the events of Breach, Velvet is preparing to use the weapon when Coco stops her, reminding her that she "spent all semester building that up" and urging her not to "waste it." This seems to indicate that the weapon is extremely powerful, and thus, should not be wasted. Alternatively, it could simply be a nod to the production team, teasing viewers with the weapon in the production diaries and building expectations of it being revealed during volume 2.

Trivia

 * According to Monty Oum on the Season 2 Finale Q&A Livestream, this is his favorite weapon in RWBY.