Should I upgrade Feral in Slay the Spire 2?

Compare the upgraded text: Cost changes from 2 to 1. If the upgrade lowers cost, adds damage/block, or enables a combo piece, it is usually high priority.

What builds use Feral?

Feral appears in 2 tracked builds: Claw Machine (A-tier, core card), Machine Mind (B-tier, core card).

What character uses Feral?

Feral 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.

Feral

Defect · Power · Uncommon · 2 cost

Base

Upgraded

Card text

The first time you play a 0 Energy Attack each turn, return it to your Hand.

Feral+

Cost changes from 2 to 1

Builds that use Feral

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

Build context

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

Related cards

Feral FAQ

Should I upgrade Feral in Slay the Spire 2?: Compare the upgraded text: Cost changes from 2 to 1. If the upgrade lowers cost, adds damage/block, or enables a combo piece, it is usually high priority.
What builds use Feral?: Feral appears in 2 tracked builds: Claw Machine (A-tier, core card), Machine Mind (B-tier, core card).
What character uses Feral?: Feral 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.