Foul Potion

Foul Potion

SpecialSharedThrow
Deal 12 damage to ALL players and enemies.
Can be thrown at the Merchant for 100 Gold instead.
  • In combat: deals 12 flat damage to every creature that is not a pet, all enemies and all players, including you.
  • Strength does not raise it and Block absorbs it as usual.
  • Outside combat: only works in a shop or the Fake Merchant event, where you throw it at the merchant for 100 gold.
  • It cannot be used in any other room.
  • It comes from an event, not the normal pool.
Use
Throw
When
Any time
Rarity
SpecialNever a random drop
Character
All characters

When to take Foul Potion

Usually worth more as 100 gold at the next shop than drunk. Only drink it when 12 damage to everything ends the fight and you can block the 12 coming back.

Other special potions

Changes by version

  1. 18 Jun 2026Bug fixv0.107.1
    Fixed being unable to give the Foul Potion to the Fake Merchant
    Bug fixv0.107.1
    Players can no longer throw the Foul Potion while the Merchant inventory is open, and using it on the Merchant no longer freezes the game on controller
  2. 7 May 2026Bug fixBeta branch
    Players are now disallowed from throwing the Foul Potion if the Merchant inventory is open
    Bug fixBeta branch
    Using Foul Potion on the Merchant no longer freezes the game on controller
  3. 26 Apr 2026Bug fixBeta branch
    Fixed being unable to give the Foul Potion to the Fake Merchant
All 14 patch notes11 older
  1. 2 Apr 2026TextOstyBeta branch
    Foul Potion description now specifies that it deals damage to "ALL players and enemies" instead of "EVERYONE", making it clearer that it does not hit Osty
    Bug fixThe Lantern KeyBeta branch
    Fixed an issue where, if the player visited a combat-style event without actually starting a combat (i.e. choosing "Return the Key" at The Lantern Key event) and then visited the Merchant immediately after, throwing a Foul Potion at the Merchant would not grant the player any gold
  2. 26 Mar 2026Bug fixOstyBeta branch
    Foul potion no longer damages Osty
  3. 4 Dec 2025ChangeInternal playtest
    No longer spawns unless the player has either 100 Gold or a Foul potion
  4. 4 Sep 2025Bug fixInternal playtest
    Foul Potion can now be thrown at Merchant via controller
  5. 25 Apr 2025TextInternal playtest
    Foul Potion's description now capitalizes EVERYONE
  6. 30 Jan 2025Bug fixInternal playtest
    Foul Potion can no longer be obtained from events
  7. 16 Jan 2025Bug fixTanx's WhistleInternal playtest
    Foul Potion and Tanx's Whistle can now only be received via their respective events
  8. 9 Jan 2025Bug fixInternal playtest
    Fixed an issue that prevented using Foul Potion on the Merchant
  9. 12 Sep 2024Bug fixInternal playtest
    Fixed typo in Foul Potion description
  10. 29 Jun 2024InterfaceInternal playtest
    You must now throw the Foul Potion at the Merchant to receive the gold reward
    Bug fixInternal playtest
    Foul potion has been filtered from potion pools
  11. 21 Jun 2024Bug fixInternal playtest
    Filtered out Foul Potion when rolling potions

Internal playtest notes are from before the Early Access release. Names and numbers in them can differ from the game today.

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