Should I upgrade Knife Trap in Slay the Spire 2?

Compare the upgraded text: Upgrade and play every Shiv in your Exhaust Pile on the enemy.. If the upgrade lowers cost, adds damage/block, or enables a combo piece, it is usually high priority.

What builds use Knife Trap?

Knife Trap appears in 1 tracked build: Thousand Cuts (A-tier, core card).

What character uses Knife Trap?

Knife Trap is tagged as a Silent card. See the Silent build hub for archetypes that care about it.

Updated for Data 2026-03-17Early Access — numbers may shift with patches.

Knife Trap

Silent · Skill · Rare · 2 cost

Base

Upgraded

Card text

Play every Shiv in your Exhaust Pile on the enemy.

Knife Trap+

Upgrade and play every Shiv in your Exhaust Pile on the enemy.

Builds that use Knife Trap

Archetypes that draft this card in real runs, with the role it plays.

AThousand CutsSilent · Core card

Keywords

Exhaust Shiv

Build context

See the Silent build hub for archetypes that feature this card in real runs.

Related cards

Knife Trap FAQ

Should I upgrade Knife Trap in Slay the Spire 2?: Compare the upgraded text: Upgrade and play every Shiv in your Exhaust Pile on the enemy.. If the upgrade lowers cost, adds damage/block, or enables a combo piece, it is usually high priority.
What builds use Knife Trap?: Knife Trap appears in 1 tracked build: Thousand Cuts (A-tier, core card).
What character uses Knife Trap?: Knife Trap is tagged as a Silent card. See the Silent build hub for archetypes that care about it.

Patch history

SpireForge snapshots card text from Untapped exports dated 2026-03-17. When Mega Crit ships a balance patch, we re-run the scraper and refresh every affected URL—see /patches for the editorial log.