Adder Stoneアダーストーン

What is Adder Stone? Features and uses

Adder Stone is a poor item in Core Keeper (Valuables). It can be obtained from Iron Chest, Fishing in The Forgotten Ruins (non-fish catches).

Adder Stone key points (from the game data)

• Best source: Iron Chest — 4.2% chance per roll.
• Sells to merchants for 17 Ancient Coins.

Calculated and summarized by this site from the game data (1.3.0.6).

How to get Adder Stone (Fishing, Chests & pedestals)

Fishing (1) Chests & pedestals (1)

Source	Type	Biome	Amount	Chance
Fishing in The Forgotten Ruins (non-fish catches)	Fishing	The Forgotten Ruins	1	1.7%
Iron Chest	Chests & pedestals	The Clay Caves, The Forgotten Ruins	1	4.2%

"Chance" is the chance to get at least one of this item per try (opening one chest, defeating one enemy, one catch). A "guaranteed group" is the group of a chest or boss from which exactly one item always drops; it does not mean this item always drops (the chance of it being picked from that group is shown in small text). Only items that always drop are marked "Guaranteed". Fishing means catches with a fishing rod, separate from enemy and boss drops. Calculated from the game's drop tables (Conf/Loot, 1.3.0.6) the same way the game rolls them.

Other ways to get Adder Stone

• Can come from the Iron Chest found inside a scene (building, ruin, camp and so on) (4.2% chance per container)
• Can come from the Ancient Chest found inside a scene (building, ruin, camp and so on) (4.3% chance per container)Where: Dirt Melody Room, Dirt Melody Room
• Can come from the Copper Chest found inside a scene (building, ruin, camp and so on) (4.2% chance per container)Where: Clay Melody Room

Scene containers, dungeon placements, guaranteed drops and natural spawns are based on the Obtaining data of the Core Keeper Wiki (Fandom) (CC BY-SA 3.0), because these are not in the game files this site reads. Scene names are the wiki's English names.