One Deck Dungeon

You can fill boxes on the Fiend during any Encounter’s Use Skills and Place Dice step, and once a die is placed it remains on the Fiend until you Confront the Fiend or Descend (page 1).

Fiend boxes ignore any effects that would alter them or placement in them (including unfilled green gem boxes elsewhere), and grey boxes on the Fiend can be filled with dice of any color (page 1).

When all boxes on a Fiend are full you can Confront it: all dice on the Fiend return to the supply, the Threat Level is reduced by one, and you gain the Fiend’s Confront Bonus (applied multiple times if on floor 2 or 3) (page 2).

Threat Level starts at 2, resets to 3 at the start of the second floor and to 4 at the start of the third floor, and all effects at that level or lower are active (e.g., at Level 3 effects 1–3 apply) (page 2).

When descending all dice on the Fiend are returned to the supply, and the Fiend is removed from play when fighting the boss; reaching the boss with a Fiend in play grants +1 campaign checkmark (or +2 on Difficult), and when playing with a Fiend you always gain a basic skill during setup (page 2).