SpireForge

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

Double Energy

Defect · Skill · Uncommon · 1 cost

Base

Double Energy

Upgraded

Double Energy+

Card text

Double your Energy. Exhaust.

Double Energy+

Cost changes from 1 to 0

Keywords

Exhaust

Build context

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

Related cards

Boost Away
Boot Sequence
Chaos
Charge Battery
Chill
Compact
Coolheaded
Darkness

Double Energy FAQ

Should I upgrade Double Energy in Slay the Spire 2?
Compare the upgraded text: Cost changes from 1 to 0. If the upgrade lowers cost, adds damage/block, or enables a combo piece, it is usually high priority.
What builds use Double Energy?
Double Energy is tagged as a Defect card. See the Defect build hub for archetypes that care about it.
What character uses Double Energy?
Double Energy 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.