Should I upgrade Corruption in Slay the Spire 2?

Compare the upgraded text: Cost changes from 3 to 2. If the upgrade lowers cost, adds damage/block, or enables a combo piece, it is usually high priority.

What builds use Corruption?

Corruption appears in 1 tracked build: Ashen Reaper of the Pyre (A-tier, core card).

What character uses Corruption?

Corruption is tagged as a Ironclad card. See the Ironclad build hub for archetypes that care about it.

Updated for Data 2026-03-17Early Access — numbers may shift with patches.

Corruption

Ironclad · Power · Ancient · 3 cost

Base

Corruption

Upgraded

Corruption+

Card text

Skills cost 0 Energy. Whenever you play a Skill, Exhaust it.

Corruption+

Cost changes from 3 to 2

Builds that use Corruption

Archetypes that draft this card in real runs, with the role it plays.

AAshen Reaper of the PyreIronclad · Core card

Keywords

Exhaust

Build context

See the Ironclad build hub for archetypes that feature this card in real runs.

Related cards

Corruption FAQ

Should I upgrade Corruption in Slay the Spire 2?: Compare the upgraded text: Cost changes from 3 to 2. If the upgrade lowers cost, adds damage/block, or enables a combo piece, it is usually high priority.
What builds use Corruption?: Corruption appears in 1 tracked build: Ashen Reaper of the Pyre (A-tier, core card).
What character uses Corruption?: Corruption is tagged as a Ironclad card. See the Ironclad build hub for archetypes that care about it.

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.