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Bone Brew — Uncommon Potion in Slay the Spire 2

Updated 17 Oct 2026 Source Slay the Spire 2 potion data (spire-codex.com API), 63 potions retrieved 17 October 2026 By
Data status: The facts on this page were checked against the source named above. Game values can still shift with a patch, so re-check anything that looks off.
Bone Brew potion art
Bone Brew

Summon 15.

RarityUncommon
Poolnecrobinder
TypeSingle-use consumable

Effect

Summon 15.

Potion data comes from the community-built Slay the Spire 2 compendium API and tracks the early-access build. Rarity decides how often a potion turns up, so the rare ones are worth saving for a fight you cannot otherwise win.

Other Uncommon potions

  • Ashwater — Exhaust any number of cards in your Hand.
  • Blessing of the Forge — Upgrade all cards in your Hand for the rest of combat.
  • Clarity Extract — Draw 1 card. At the start of your next 3 turns, draw 1 additional card.
  • Cunning Potion — Add 3 Upgraded Shivs into your Hand.
  • Cure All — Gain 1 Energy. Draw 2 cards.
  • Duplicator — This turn, your next card is played an extra time.
  • Fortifier — Triple your Block.
  • Fysh Oil — Gain 1 Strength and 1 Dexterity.

Where to go next

All 63 potions — the full table. Relics cover the passive bonuses that last a whole run.

Card database lists the cards you might build around. Enchantments change the cards you keep.

Frequently asked questions

What does Bone Brew do in Slay the Spire 2?

Summon 15.

How rare is Bone Brew?

It is Uncommon, in the necrobinder potion pool.

Should I hold or drink Bone Brew?

Hold defensive potions for the turn that would kill you; drink offensive ones early if they remove a threat outright.

More Slay the Spire 2 guides

Sources

Figures and item data on this site are read from the game’s own reference wiki before publishing. Where a value could not be confirmed there, the page says so instead of filling the gap.