Should I upgrade Rattle in Slay the Spire 2?

Compare the upgraded text: Osty deals 9 damage. Hits an additional time for each other time he has attacked this turn.. If the upgrade lowers cost, adds damage/block, or enables a combo piece, it is usually high priority.

What builds use Rattle?

Rattle appears in 1 tracked build: Osty's Warband (A-tier, core card).

What character uses Rattle?

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

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

Rattle

Necrobinder · Attack · Uncommon · 1 cost

Base

Upgraded

Card text

Osty deals 7 damage. Hits an additional time for each other time he has attacked this turn.

Rattle+

Osty deals 9 damage. Hits an additional time for each other time he has attacked this turn.

Builds that use Rattle

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

AOsty's WarbandNecrobinder · Core card

Build context

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

Related cards

Rattle FAQ

Should I upgrade Rattle in Slay the Spire 2?: Compare the upgraded text: Osty deals 9 damage. Hits an additional time for each other time he has attacked this turn.. If the upgrade lowers cost, adds damage/block, or enables a combo piece, it is usually high priority.
What builds use Rattle?: Rattle appears in 1 tracked build: Osty's Warband (A-tier, core card).
What character uses Rattle?: Rattle is tagged as a Necrobinder card. See the Necrobinder 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.