Chaos Deck is an item that begins the quest  Darkmoon Chaos Deck, which rewards the player with a [Darkmoon Card: Berserker!].
This item can be acquired by combining individual Chaos cards:
Ad blocker interference detected!
Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers
Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.