Antewise

Unleash — Necrobinder 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.
Unleash card art
Unleash

Osty deals 6 damage. Deals additional damage equal to Osty's current HP.

CharacterNecrobinder
TypeAttack
RarityBasic
Cost1 Energy
TargetAnyEnemy
Total damage6
Per Energy6.00
TagsOstyAttack

Card text

Osty deals 6 damage. Deals additional damage equal to Osty's current HP.

This card has no upgraded text in the card data, so it does not change on upgrade or the change is not text.

Where it sits on the curve

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

Unleash produces 6.00 per Energy at base . That ranks it 109 of 143 of the 143 attacks with a fixed cost. It sits in the top 24% on this measure.

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

Other Necrobinder cards at 1 Energy

  • Afterlife — Summon 6.
  • Blight Strike — Deal 8 damage. Apply Doom equal to damage dealt.
  • Bodyguard — Summon 5.
  • Bone Shards — If Osty is alive, he deals 9 damage to ALL enemies and you gain 9 Block. Osty dies.
  • Borrowed Time — Gain 4 Energy. Cards cost an additional 1 Energy this turn.
  • Calcify — Osty's attacks deal 4 additional damage.

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 Unleash do in Slay the Spire 2?

Osty deals 6 damage. Deals additional damage equal to Osty's current HP.

How much does Unleash cost?

1 Energy. It is a Basic Attack card.

Is Unleash efficient for its cost?

It produces 6.00 damage per Energy, which ranks 109 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.