Blood of Jormungandr

Blood of Jormungandr (ブラッド・オブ・ヨルムンガンド) is a highly deadly poison.

Description
Situated in the Treasury of the Great Tomb of Nazarick, this item is one of the first lines of defense protecting the inner vaults of the treasury.

Appearance
A purple gas that permeates the air.

Abilities
A purple gas that renders the surrounding air toxic, killing any living thing however it has no effect in non-living beings.

Trivia

 * The name "Jormungandr" refers to the Midgard Serpent of Norse mythology, the sea serpent that encircled Midgard.
 * So far the actual item itself as yet to make an appearance in the Anime.