A Stacked Deck is a path of exile currency item that can be used to gain one random divination card.
The chance of obtaining any divination card is determined using weighting based on normal drop weighting, but is much better. This is comparable to The Gambler, but has a significantly higher chance of rewarding higher end divination cards.
Stacked Decks are extremely rare currency items that can be dropped by slain monsters, in any zone and at any level. They may also rarely be obtained when selling an item enchanted with a Gilded Fossil to a vendor, however unlike most other currency items, they are unobtainable from vendors otherwise.