Unleash — The Necrobinder | Slay the Spire 2 Guide

Cost	1
Type	Attack
Rarity	Basic
Who plays it	The Necrobinder

Effect & role

Osty deals 6 damage plus damage equal to its current HP — the core Osty payoff; the bigger Osty, the harder it hits.

Card values are checked against game v0.111— Early Access balance can shift between patches.

More cards for this character

Builds that want it

Blight Strike + End of Days + Soul engine

Deep-dive guides

characters

Slay the Spire 2 Necrobinder Guide: Osty, Doom Executes and the Soul Engine (v0.111 Beta)

Complete Necrobinder guide for Slay the Spire 2 Early Access v0.111: Osty attack and body-block mechanics, Doom execute thresholds at turn end, the 0 cost Soul draw loop, Bound Phylactery value, Act 1 transitions, boss by boss plans, relic priority and the five ways runs die.

builds

Slay the Spire 2 Doom Execute Build Guide: Necrobinder Doom Stacking, Countdown, End of Days and Co-op Scaling (v0.111)

A complete Doom Execute Necrobinder guide for Slay the Spire 2 Early Access (v0.111 beta): how the turn-end execute check works, Scourge, Countdown, End of Days and Reaper Form card by card, Osty body-blocking, assembly order, act by act boss windows, relic fit, counters and pivots.

beginner

Slay the Spire 2 Card Pick Guide: Take-or-Skip Framework, Rarity Truths and First Five Picks (v0.111 Beta)

A complete take-or-skip framework: why your deck is a machine, a priority ladder for the first five picks, proof that rarity does not equal power, five screening questions, and per-character drafting rules.

advanced

Slay the Spire 2 Relic Synergy Guide: All 42 Relics by Family, S-Tier Combos and Detour Rules (v0.111 Beta)

Every one of the 42 relics in Slay the Spire 2 v0.111 sorted into functional families: economy, defense, draw, energy, damage and character-locked, with tier S and A analysis, multiplicative engine combos and rules for when a relic is worth rerouting your path.