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Knockout Blow — Regent Card Guide (Slay the Spire 2)

Knockout Blow is a 3-cost Uncommon Attack for the Regent in Slay the Spire 2. Effect, upgrade, C-tier verdict and deck fit.

Official art
StS2_Regent-KnockoutBlow.png

AttackUncommonRegentC-Tier

Knockout Blow is a 3-cost Uncommon Attack for the Regent in Slay the Spire 2.

3Energy Cost

AttackType

UncommonRarity

RegentCharacter

EFFECT · Numbers read as base (upgraded)Deal 30 (upgraded 38) damage.If this kills an enemy, gain .

Tier Verdict

C-Tier C tier — situational; often a trap without a specific plan.

Similar Cards

Official art soonCollision CourseCommon · 0 cost Official art soonDying StarRare · 1 cost Official art soonGamma BlastUncommon · 0 cost Official art soonKingly KickUncommon · 4 cost

Quick Facts

NameKnockout Blow

Cost3

TypeAttack

RarityUncommon

CharacterRegent

Community TierC

Data Sources

Effect data: slaythespire.wiki.gg (official wiki) · Tier: September 2026 community card table

Related Guides

Alignment — Regent Card Guide (Slay the Spire 2)Arsenal — Regent Card Guide (Slay the Spire 2)Astral Pulse — Regent Card Guide (Slay the Spire 2)Beat into Shape — Regent Card Guide (Slay the Spire 2)BEGONE! — Regent Card Guide (Slay the Spire 2)Big Bang — Regent Card Guide (Slay the Spire 2)Black Hole — Regent Card Guide (Slay the Spire 2)Bombardment — Regent Card Guide (Slay the Spire 2)