Antewise

Knockdown — Colorless 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.
Knockdown card art
Knockdown

Deal 10 damage. The enemy takes double damage from other players this turn.

CharacterColorless
TypeAttack
RarityRare
Cost3 Energy
TargetAnyEnemy
Total damage10
Per Energy3.33 → 4.67 upgraded

Card text

Deal 10 damage. The enemy takes double damage from other players this turn.

Upgraded: Deal 14 damage. The enemy takes triple damage from other players this turn.

Where it sits on the curve

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

Knockdown produces 3.33 per Energy at base and <strong>4.67</strong> upgraded. That ranks it 138 of 143 of the 143 attacks with a fixed cost. It sits in the top 4% on this measure.

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

What it applies

  • Knockdown × 2

Other Colorless cards at 3 Energy

  • Beat Down — Play 3 random Attacks from your Discard Pile.
  • Calamity — Whenever you play an Attack, add a random Attack into your Hand.
  • Eternal Armor — Gain 9 Plating.
  • Jackpot — Deal 25 damage. Add 3 random 01 Energy cards into your Hand.
  • Rolling Boulder — At the start of your turn, deal 5 damage to ALL enemies and increase this damage by 5.

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 Knockdown do in Slay the Spire 2?

Deal 10 damage. The enemy takes double damage from other players this turn.

What does upgrading Knockdown change?

Deal 14 damage. The enemy takes triple damage from other players this turn.

How much does Knockdown cost?

3 Energy. It is a Rare Attack card.

Is Knockdown efficient for its cost?

It produces 3.33 damage per Energy, which ranks 138 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.