A 2-notch charm that drops the SOUL cost of every spell from 33 to 24. Hidden in a secret room at the top of Soul Sanctum in City of Tears.
Spell Twister gives the Knight one extra spell cast per SOUL meter, full stop. According to the wiki, the charm drops the SOUL cost of every spell from 33 to 24, which turns the standard 99-SOUL bar into four casts instead of three. Two notches for a 33% extra-cast rate is the cheapest spell uplift in the game.
Per the wiki, the discount applies to all six spells: Vengeful Spirit, Shade Soul, Howling Wraiths, Abyss Shriek, Desolate Dive, and Descending Dark. Focus is the only SOUL action exempt; the heal still drains the full 33 SOUL per cast, which is a quiet trade most sustain builds work around with Quick Focus or Soul Eater pairings.
The wiki specifies the pickup hides in a secret room at the top of Soul Sanctum in City of Tears, reached by climbing the back walls past the Soul Master arena entry. The room is easy to miss because most players run straight to the boss door; the breakable ceiling is in the prior shaft.
This guide covers the 33-to-24 SOUL math, the Soul Sanctum pickup route, the Shaman Stone 85%-damage-per-meter combo, the Focus exemption workaround, and the canonical spell loadouts for Pantheon and Path of Pain runs.
Spell SOUL cost 33 to 24, a 27% discount that adds one cast per meter.
Secret room at top of Soul Sanctum, City of Tears (no Geo cost).
Shaman Stone for the 85% damage-per-SOUL uplift (33% damage + 27% cost reduction).
Pure nail or Focus-heavy builds; Focus cost is exempt from the discount.Spell Twister flat-discounts every spell cast by 9 SOUL. Per the wiki, the math is fixed: 33 SOUL drops to 24, and the discount stacks the same way on every spell tier (Vengeful Spirit, Howling Wraiths, Desolate Dive, and their Shade-upgraded forms).
The wiki specifies the SOUL meter holds 99 units at default. Without Spell Twister, that meter yields three full casts (99 / 33 = 3, with 0 SOUL left). With Spell Twister, it yields four casts (99 / 24 = 4.125, with 3 SOUL left over). The fourth cast is the entire reason the charm exists.
According to the wiki, the discount applies before any other SOUL modifier. Soul Catcher and Soul Eater scale incoming SOUL on hit and kill; Spell Twister scales outgoing SOUL on cast. The two layers stack cleanly, which is why the canonical spell loadout pairs all three for the highest sustained cast rate in the game.
Per the wiki, the meter is not the only beneficiary. Reserve SOUL (the unlocked second meter from the Hive Knight quest) also feeds Spell Twister cleanly; the full 198 SOUL pool (99 active + 99 reserve) yields 8 casts at 24 SOUL each, vs 6 casts at the baseline 33 SOUL cost.
| Stat | Value |
|---|---|
| Notch cost | 2 |
| Effect | Spell SOUL cost 33 to 24 (9-SOUL discount) |
| Affects | Vengeful Spirit, Shade Soul, Howling Wraiths, Abyss Shriek, Desolate Dive, Descending Dark |
| Does NOT affect | Focus (heal still costs 33 SOUL) |
| Casts per full meter | 4 (vs 3 baseline) |
| Casts with Reserve SOUL | 8 (vs 6 baseline) |
| Location | Soul Sanctum, City of Tears (secret room top) |
| Cost | Free pickup |
| Required ability | Mantis Claw (wall jumping) |
| Stacks with | Shaman Stone (damage), Soul Catcher (incoming SOUL), Soul Eater (incoming SOUL) |
Per the wiki, the 2-notch cost is the lowest tier for any spell-economy charm in the game. Comparable charms either cost more notches (Shaman Stone at 3) or apply to a single spell family only (Flukenest, Glowing Womb, Defender's Crest). Spell Twister is the only charm that affects all six spells universally.
Spell Twister sits in a hidden chamber at the top of Soul Sanctum, accessed by Mantis Claw wall-jumping in the shaft before the Soul Master arena. Per the wiki, the pickup chamber is one room above the elevator that drops the Knight into the boss room.
Per the wiki, the same shaft connects to two other rewards: the Soul Master arena one room down, and a Vessel Fragment behind a Desolate Dive-breakable floor. A single visit can clear all three pickups before returning to the Watcher's bench.
Spell Twister does NOT reduce Focus cost. Per the wiki, healing the Knight still drains the full 33 SOUL per Focus channel, which makes Spell Twister a pure damage-economy charm rather than a sustain economy charm.
According to the wiki, the design intent is clean: Spell Twister is meant to enable more offensive casts per run, not more heals. Players who want cheaper Focus heals run Quick Focus (faster channel time) or Deep Focus (double-heal per channel) instead.
The wiki notes the workaround: Soul Eater (+10% SOUL on hit) and Soul Catcher (+8% SOUL on hit) both feed the meter regardless of where the SOUL is spent. A Spell Twister + Soul Eater pair gives the Knight more spell casts AND more Focus heals per encounter, because the meter refills faster on both ends.
Spell Twister sits at the top of the spell meta because the 27% cost cut multiplies with every other spell modifier. Per the wiki, the three canonical pairings are Shaman Stone (damage), Soul Catcher (incoming SOUL), and Soul Eater (incoming SOUL).
Shaman Stone pairingAccording to the wiki, Shaman Stone adds +33% spell damage. Combined with Spell Twister's 27% cost reduction, the damage-per-SOUL ratio jumps roughly 85% over baseline. Vengeful Spirit base damage of 15 per cast becomes 20 damage at 24 SOUL = 0.83 damage per SOUL, vs 0.45 baseline (15 / 33). The 5-notch combo (2 + 3) is the spell-build spine.
Soul Catcher pairingPer the wiki, Soul Catcher adds +8% SOUL on nail strike (8 SOUL per hit instead of 11... wait, baseline is 11 SOUL per hit, Soul Catcher adds 3 more for 14 total). The compound effect with Spell Twister is a SOUL economy that refills faster AND spends slower; the Knight reaches the next cast ~33% sooner across normal play.
Soul Eater pairingThe wiki specifies Soul Eater extends Soul Catcher's effect, adding even more SOUL on nail strike (20 SOUL per hit total). Combined with Spell Twister, a single enemy hit nearly refills one full spell cast. The 6-notch combo (2 + 4) is the Pantheon sustain spell spine.
Flukenest pairingPer the wiki, Flukenest converts Vengeful Spirit and Shade Soul into bug swarms (9 flukes at 4 damage each). Spell Twister drops the cost of those Flukenest casts to 24 SOUL, which means the Knight can fire 4 full Flukenest swarms per meter instead of 3. The dung-cloud chip with Defender's Crest stacks the same way.
The 5-notch spell spine plus 4-6 notches of sustain and Focus support is the canonical Spell Twister loadout. Per the wiki, the build dominates Pantheon-of-Hallownest spell-only clears and Radiant Hall of Gods spell rotations.
Spell Twister (2 notches; 33 to 24 SOUL per cast) Shaman Stone (3 notches; +33% spell damage) Soul Catcher (2 notches; faster SOUL on hit)
Quick Focus (3 notches; faster Focus channel)
Stalwart Shell (1 notch; longer i-frames)According to the wiki, this 11-notch loadout covers spell economy, spell damage, SOUL replenishment, faster Focus heals, and a defensive filler in one budget. In actual play, the spread fits Radiant Pure Vessel, Pantheon White Defender, and the Path of Pain dive-spam sections without overcharming.
Spell Twister ties to the Soul Sanctum region, the canonical spell-damage stack, and the wider SOUL economy. These spokes pick up the threads.
Game data and screenshots adapted from hollowknight.fandom.com, used under CC BY-SA 3.0. Original content remains the property of the wiki contributors and Team Cherry.