Soul Fysh is a boss in Slay the Spire 2. Here is what she or he does, the moves to expect, and the order that actually wins.
A rhythm-based boss that cycles between attacks, Beckon status cards, and Intangible windows on a strict 5-turn rotation.
The fight at a glance
| Act | Act 1b |
| Location | Underdocks |
| Difficulty | Hard |
| HP | 211 |
| Key mechanic | Beckon / Intangible Cycle |
The rotation
Strict 5-turn cycle: Beckon (turn 1) → Lure (turn 2) → Nibble (turn 3) → Intangible (turn 4) → Vulnerable Bite + Intangible (turn 5), then repeats.
Moves
| Move | What it does |
|---|---|
| Beckon | Places Beckon cards in your draw pile and discard pile. Holding a Beckon at end of turn deals 6 unblockable damage. |
| Lure | Attack dealing ~15 damage. |
| Nibble | Light attack dealing ~8 damage and adding another status card. |
| Intangible | All damage received is reduced to 1 per hit for the turn. |
| Vulnerable Bite | Deals ~10 damage and applies 3 stacks of Vulnerable while still Intangible. |
How to beat Soul Fysh
- Learn the 5-turn rhythm. Dump all your damage on turns 1-3 when Soul Fysh is vulnerable. On turns 4-5 (Intangible), focus on defense and discarding Beckon cards instead of wasting attacks. Discard effects and small deck size help manage the Beckon cards. Multi-hit attacks are useless during Intangible — save them for the vulnerable window.
- Never hold a Beckon card at end of turn — it deals 6 unblockable damage
- Discard effects help dump Beckons without wasting your whole turn
- Don’t waste big attacks during Intangible turns (4-5) — save them for turns 1-3
- A smaller, leaner deck draws Beckons more predictably
Where to go next
The boss table lists every boss with HP and key mechanic. The deckbuilding basics page covers building for fights like this one.