Fortifier
Triple your Block.
Fortifier is most valuable when survival is the bottleneck and one strong defensive turn changes the fight.
Best for players who treat potions as tactical resources and want to convert one key turn into survival, burst damage, or a cleaner scaling line.
Saving Fortifier for a “perfect” moment instead of using it in the fight where it actually changes the outcome, the pathing risk, or the resource tradeoff.
Potions are not long-term deck pieces, but they often decide the most dangerous fights in a run. That makes them uniquely important in Early Access, where many decks are still incomplete and cannot rely on perfect internal consistency.
A strong potion page should not just repeat the effect text. It should help you understand what kind of fight, turn, or build context turns the potion from “nice to have” into “run-saving”.
Most Relevant Build Directions
Potion FAQ
Is Fortifier good in Slay the Spire 2?
Fortifier is best judged by fight context. Potions are rarely about permanent value — they are about whether this exact effect solves the exact pressure point of the current combat.
Which builds benefit most from Fortifier?
Fortifier is most naturally useful in build directions linked to these mechanics: block.
How should I think about potions in Early Access?
Think of potions as tactical leverage. The strongest potion is often the one that changes a dangerous turn, stabilizes a weak fight, or creates a burst turn your deck could not otherwise produce.