A card box given to you by a certain witch proficient in divination. It can be used to store the Lunar Arcana you find during your performances, cards which may also be exchanged with friends in Co-Op Mode.
Each world defines divination differently, but one thing remains constant — the use of "here" and "now" as anchors to unravel the unknown. Thus, the more Arcana one hoards within this box, the brighter the lantern of understanding burns...