SpireForge

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

Buffer

Defect · Power · Rare · 2 cost

Base

Buffer

Upgraded

Buffer+

Card text

Prevent the next time you would lose HP.

Buffer+

Prevent the next 2 times you would lose HP.

Build context

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

Related cards

Biased Cognition
Bulk Up
Capacitor
Consuming Shadow
Coolant
Creative AI
Creative AI
Defragment
Echo Form

Buffer FAQ

Should I upgrade Buffer in Slay the Spire 2?
Compare the upgraded text: Prevent the next 2 times you would lose HP.. If the upgrade lowers cost, adds damage/block, or enables a combo piece, it is usually high priority.
What builds use Buffer?
Buffer is tagged as a Defect card. See the Defect build hub for archetypes that care about it.
What character uses Buffer?
Buffer is tagged as a Defect card. See the Defect 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.