Should I upgrade Haze in Slay the Spire 2?

Compare the upgraded text: Sly. Apply 6 Poison to ALL enemies.. If the upgrade lowers cost, adds damage/block, or enables a combo piece, it is usually high priority.

What builds use Haze?

Haze appears in 1 tracked build: Venom Cascade (S-tier, core card).

What character uses Haze?

Haze 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.

Haze

Silent · Skill · Uncommon · 3 cost

Base

Upgraded

Card text

Sly. Apply 4 Poison to ALL enemies.

Haze+

Sly. Apply 6 Poison to ALL enemies.

Builds that use Haze

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

SVenom CascadeSilent · Core card

Keywords

Sly Poison

Build context

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

Related cards

Haze FAQ

Should I upgrade Haze in Slay the Spire 2?: Compare the upgraded text: Sly. Apply 6 Poison to ALL enemies.. If the upgrade lowers cost, adds damage/block, or enables a combo piece, it is usually high priority.
What builds use Haze?: Haze appears in 1 tracked build: Venom Cascade (S-tier, core card).
What character uses Haze?: Haze 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.