Soul Fysh in Slay the Spire 2

Slay the Spire 2 Monster

Soul Fysh

Soul Fysh is a boss encounter with 211 base HP and 221 HP at high Ascension. Its documented pattern is Beckon → De-Gas → Gaze → Fade → Scream → repeat.

Tracked beta change (v0.111.0 beta): De-Gas damage at Ascension 9 increased from 17 to 18; the lower-difficulty value remains 16. Official sourceThe facts below remain the current main-branch data until this beta is promoted.
Encounter
Boss
Base HP
211
High Ascension HP
221
Known moves
5
Act
Act 1 - Underdocks

Moves and intents

MoveIntentDamageBlock
BeckonStatus--
De-GasAttack16 (17 A)-
GazeAttack + Status7 (8 A)-
FadeBuff--
ScreamAttack + Debuff13 (15 A)-

Attack pattern

Beckon → De-Gas → Gaze → Fade → Scream → repeat

Preparation notes

Use the move table as a damage threshold, not a script that replaces reading the fight. Ascension, multiplayer scaling, powers, and patch changes can alter the exact line. For boss-specific planning, continue to the boss guide hub.

Used in real decisions

Guides that mention Soul Fysh