Antewise

Sunder — Defect Attack Card in Slay the Spire 2

Updated 17 Oct 2026 Source Slay the Spire 2 card data (spire-codex.com API), 577 cards retrieved 17 October 2026 By
Data status: The facts on this page were checked against the source named above. Game values can still shift with a patch, so re-check anything that looks off.
Sunder card art
Sunder

Deal 24 damage. If this kills an enemy, gain 3 Energy.

CharacterDefect
TypeAttack
RarityUncommon
Cost3 Energy
TargetAnyEnemy
Total damage24
Per Energy8.00 → 10.67 upgraded

Card text

Deal 24 damage. If this kills an enemy, gain 3 Energy.

Upgraded: Deal 32 damage. If this kills an enemy, gain 3 Energy.

Where it sits on the curve

Measured the same way as our efficiency tier list: total damage divided by Energy.

Sunder produces 8.00 per Energy at base and <strong>10.67</strong> upgraded. That ranks it 67 of 143 of the 143 attacks with a fixed cost. It sits in the top 54% on this measure.

The measure ignores everything that is not a number. Area damage, conditions and drawbacks are not priced in.

What it gives back

  • Gains 3 Energy

Other Defect cards at 3 Energy

  • Creative AI — At the start of your turn, add a random Power into your Hand.
  • Echo Form — The first card you play each turn is played an extra time.
  • Ice Lance — Deal 19 damage. Channel 3 Frost.
  • Refract — Deal 9 damage twice. Channel 2 Glass.
  • Voltaic — Channel Lightning equal to the Lightning already Channeled this combat.

Where to go next

All 577 cards — the full table, filterable by character. Efficiency tier list — every measurable card ranked.

Rarity system explains how often this card appears. Enchantments covers the modifiers that can change it.

Frequently asked questions

What does Sunder do in Slay the Spire 2?

Deal 24 damage. If this kills an enemy, gain 3 Energy.

What does upgrading Sunder change?

Deal 32 damage. If this kills an enemy, gain 3 Energy.

How much does Sunder cost?

3 Energy. It is a Uncommon Attack card.

Is Sunder efficient for its cost?

It produces 8.00 damage per Energy, which ranks 67 of 143 among the attacks that can be measured this way.

More Slay the Spire 2 guides

Sources

Figures and item data on this site are read from the game’s own reference wiki before publishing. Where a value could not be confirmed there, the page says so instead of filling the gap.