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Foul Potion artwork
Potions

Foul Potion

Rarity
Event
Pool
Event

Effect

Deal 12 damage to ALL players and enemies.
Can be thrown at the Merchant for 100 Gold instead.
Main branchLast updated 2026-11-02
Foul Potion (potion)/images/potions/foul_potion.webpDeal 12 damage to ALL players and enemies. Can be thrown at the Merchant for 100 Gold instead.

Decisions and interactions

Foul Potion and the hidden Merchant fightFoul Potion has three uses: deal 12 damage to all players and enemies in combat, obtain 100 Gold from a real Merchant, or start the hidden fight at The Merchant???.Double Snecko: obtain both the real and fake eyesThe fake Merchant is restricted to single-player, from Act 2 onward, and requires at least 100 Gold or a carried Foul Potion.
Foul Potion

Check which Merchant receives the potion

One Foul Potion used outside combat with the inventory closed. Fake Merchant combat rewards require winning the fight.

  1. Real MerchantFoul PotionReceive 100 GoldThe potion is exchanged for Gold. Ordinary potions cannot be sold this way.
  2. The Merchant???The Merchant???Start a fightThe lookalike event becomes combat, not a routine Gold exchange.
  3. Win the hidden fightThe Merchant's Rug???300 Gold + unsold relicsYou also receive the imitation rug. Purchases made before fighting have already spent your Gold.
Foul Potion in combat has a third effect: 12 damage to all players and enemies, including you.
Sources

Last updated 2026-11-02.

  • Stable potions effects
  • Stable events effects
  • Fake Merchant encounter rewards

Related references

Double Snecko: obtain both the real and fake eyesChallengeWhen to spend a potion before the bossPotion timing, targeting and immediate value
SPIRE HANDBOOK

An independent Slay the Spire 2 strategy reference.

Game artwork and game data © Mega Crit. Extracted reference data and images via Spire Codex.

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