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Crimson Mantle — Ironclad Power 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.
Crimson Mantle card art
Crimson Mantle

At the start of your turn, lose 1 HP and gain 8 Block.

CharacterIronclad
TypePower
RarityRare
Cost1 Energy
TargetSelf

Card text

At the start of your turn, lose 1 HP and gain 8 Block.

Upgraded: At the start of your turn, lose 1 HP and gain 10 Block.

What it applies

  • Crimson Mantle × 8

Other Ironclad cards at 1 Energy

  • Aggression — At the start of your turn, put a random Attack from your Discard Pile into your Hand and U
  • Armaments — Gain 5 Block. Upgrade a card in your Hand.
  • Ashen Strike — Deal 6 damage. Deals 3 additional damage for each card in your Exhaust Pile.
  • Body Slam — Deal damage equal to your Block.
  • Break — Deal 20 damage. Apply 5 Vulnerable.
  • Breakthrough — Lose 1 HP. Deal 9 damage to ALL enemies.

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 Crimson Mantle do in Slay the Spire 2?

At the start of your turn, lose 1 HP and gain 8 Block.

What does upgrading Crimson Mantle change?

At the start of your turn, lose 1 HP and gain 10 Block.

How much does Crimson Mantle cost?

1 Energy. It is a Rare Power 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.