Iron Coin

 is an active item.

Effects

 * Upon use, kills all enemies in a random unexplored room of the current floor.
 * Where the effect took place, a note can be found lying in a pool of blood on the ground.
 * While held:
 * Grants a 20% discount at shops.
 * Increases coolness by 2.

Trivia

 * This item, including the amount of uses it has, is a reference to A Song of Ice and Fire, popularized as the television show, Game of Thrones. Arya Stark strikes a deal with the mysterious assassin Jaqen H'ghar, who pledges to kill three people in her name. He later gives her an iron coin which she can use, if she desires, to meet with the order of the Faceless Men, and become an assassin herself.
 * "Valar Morgunis" is a play on "Valar Morghulis", meaning "All men must die", the motto of the Faceless Men.