Antewise

Colossus — Ironclad 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.
Colossus card art
Colossus

Gain 5 Block. You receive 50% less damage from Vulnerable enemies this turn.

CharacterIronclad
TypeSkill
RarityUncommon
Cost1 Energy
TargetSelf
Total Block5
Per Energy5.00 → 8.00 upgraded

Card text

Gain 5 Block. You receive 50% less damage from Vulnerable enemies this turn.

Upgraded: Gain 8 Block. You receive 50% less damage from Vulnerable enemies this turn.

Where it sits on the curve

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

Colossus produces 5.00 per Energy at base and <strong>8.00</strong> upgraded. That ranks it 36 of 56 of the 56 skills with a fixed cost. It sits in the top 38% on this measure.

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

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 Colossus do in Slay the Spire 2?

Gain 5 Block. You receive 50% less damage from Vulnerable enemies this turn.

What does upgrading Colossus change?

Gain 8 Block. You receive 50% less damage from Vulnerable enemies this turn.

How much does Colossus cost?

1 Energy. It is a Uncommon Skill card.

Is Colossus efficient for its cost?

It produces 5.00 Block per Energy, which ranks 36 of 56 among the skills 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.