Should I upgrade FTL in Slay the Spire 2?

Compare the upgraded text: Deal 6 damage. If you have played fewer than 4 cards this turn, draw 1 card.. If the upgrade lowers cost, adds damage/block, or enables a combo piece, it is usually high priority.

FTL appears in 1 tracked build: Claw Machine (A-tier, flex pick).

What character uses FTL?

FTL is tagged as a Defect card. See the Defect build hub for archetypes that care about it.

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

FTL

Defect · Attack · Uncommon · 0 cost

Base

Upgraded

Card text

Deal 5 damage. If you have played fewer than 3 cards this turn, draw 1 card.

FTL+

Deal 6 damage. If you have played fewer than 4 cards this turn, draw 1 card.

Builds that use FTL

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

AClaw MachineDefect · Flex pick

Build context

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

Related cards

FTL FAQ

Should I upgrade FTL in Slay the Spire 2?: Compare the upgraded text: Deal 6 damage. If you have played fewer than 4 cards this turn, draw 1 card.. If the upgrade lowers cost, adds damage/block, or enables a combo piece, it is usually high priority.
What builds use FTL?: FTL appears in 1 tracked build: Claw Machine (A-tier, flex pick).
What character uses FTL?: FTL is tagged as a Defect card. See the Defect 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.