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Spur — Necrobinder Skill 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.
Spur card art
Spur

Summon 3. Osty heals 5 HP.

CharacterNecrobinder
TypeSkill
RarityUncommon
Cost1 Energy
TargetSelf
KeywordsRetain

Card text

Summon 3. Osty heals 5 HP.

Upgraded: Summon 5. Osty heals 7 HP.

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.

Other cards with Retain

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 Spur do in Slay the Spire 2?

Summon 3. Osty heals 5 HP.

What does upgrading Spur change?

Summon 5. Osty heals 7 HP.

How much does Spur cost?

1 Energy. It is a Uncommon Skill card.

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.