鉄のコイン

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• 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 . This discount stacks with other discounts, such as [巧みな話術] .
• Doesn't lower the price of the [プライムプライマー] or the Gnawed Key .
• Increases coolness by 2.

• The player can get money from enemies killed in this way, but pickup drops will likely be stolen by the Rat before the player reaches the room. Chests will spawn normally after clearing rooms with this item.
• This item cannot clear boss rooms.
• [忠犬] can dig up pickups after clearing rooms with this item.
• [カギ師の心得] can grant keys after clearing rooms with this item.
• Prior to the [トランシーバー] Update , Iron Coin did not grant a discount or coolness and was a item.
• The Iron Coin can be picked up multiple times in the same run. Each Iron Coin obtained gives an additional 3 charges.
• The Iron Coin can be used to clear rooms that the Gunsling King chose for a challenge, effectively instantly clearing the room and completing the challenge without the need to enter it, although the player will not receive completion notification on their HUD.
• The Iron Coin discount at shops does stack with [巧みな話術] for a 32% discount.
• The Iron Coin discount and coolness does not stack with multiple Iron Coins.
• The coin will kill the rats scurrying around outside the entrance to the Resourceful Rat's Lair , potentially making it difficult to find.

• 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.

Defeat the boss of the Gungeon Proper without getting hit.