Updated for Data 2026-03-17Early Access — numbers may shift with patches.
Prowess
Colorless · Power · Uncommon · 1 cost
Base
Upgraded
Card text
Gain 1 Strength. Gain 1 Dexterity.
Prowess+
Gain 2 Strength. Gain 2 Dexterity.
Builds that use Prowess
Archetypes that draft this card in real runs, with the role it plays.
Keywords
Build context
Colorless cards splash into every class. Browse the Colorless card pool and pair it with any class build hub for archetypes that want it.
Related cards
Prowess FAQ
- Should I upgrade Prowess in Slay the Spire 2?
- Compare the upgraded text: Gain 2 Strength. Gain 2 Dexterity.. If the upgrade lowers cost, adds damage/block, or enables a combo piece, it is usually high priority.
- What builds use Prowess?
- Prowess appears in 4 tracked builds: Demon Form Juggernaut of War (S-tier, flex pick), Borrowed Arsenal (A-tier, flex pick), Iron Crown (B-tier, flex pick), The Gallows Doubler (B-tier, core card).
- What character uses Prowess?
- Prowess is tagged as a Colorless card. Colorless cards can be picked by any class.
Patch history
SpireForge snapshots card text from Untapped exports dated 2026-03-17. When Mega Crit ships a balance patch, we re-run the scraper and refresh every affected URL—see /patches for the editorial log.