The graveyard is the name for the discard pile.
On the game board, the graveyard is placed directly above the resource pile.

• The graveyard houses:
  1. Allies that are killed ;
  2. All items that are destroyed ;
  3. Immediate abilities after being summoned ;
  4. Any discarded cards ;
  5. All attachment abilities that were attached to its target when the target is killed or destroyed.

Cards in the Graveyard typically cannot be used anymore, but can be recovered by using cards such as Gravedigger's Cloak, Lily Rosecult, Ghostmaker.