The Evane spell
Coil
Mirrored · 24 damage
Each thumb draws an S, mirrored, starting at the top. Smooth curves with no corners. Heavy damage.
Strokes
Mirrored: the left thumb draws the right thumb's shape flipped left to right.
| Thumb | Size | Sharp corners | Vertices |
|---|---|---|---|
| Left thumb | 34 mm (17 × 34 mm) | None, smooth | 33 |
| Right thumb | 34 mm (17 × 34 mm) | None, smooth | 33 |
Size is the longer side of the drawn shape. Corner positions are the share of the stroke's length drawn before reaching them.
Casting
- Breath window
- 700 ms
- Fizzles
- below 45% overall, or under 30% shape on either thumb
- Thumb sync
- about 80 ms allowed between the thumbs' start and end times
- Learning
- Learned by tracing it 3 times, each recognised as this spell and scoring at least 55%; breath is not timed while tracing
Score weights
Effect
24 damage.
| Weakest cast | Base | Perfect cast | |
|---|---|---|---|
| Damage | 14.4 | 24 | 36.0 |
Cast quality scales power from 0.6x just over the fizzle line to 1.5x for a perfect cast.
Against monsters
| Monster | HP | Casts at best | Casts at worst |
|---|---|---|---|
| Training Golem | 120 | 4 | 9 |
| Sallow Glint | 14 | 1 | 1 |
Casts needed with this spell alone, at a perfect cast (1.5x) and at one just over the fizzle line (0.6x).
In the Codex
- Spell
- Coil
- Side
- Evane
- Style
- Mirrored
- Left thumb
- Mirrored S: start upper left, curve over the top to the right, sweep down through the middle, round the bottom, finish lower right
- Right thumb
- S: start upper right, curve over the top to the left, sweep down through the middle, round the bottom, finish lower left
- Size
- 34 mm
- Sharp corners
- None: smooth curves only
- Effect
- 24 damage
From Mobile RPG Codex › Spellcasting › Spell Book (Prototype)
- Spell
- Coil
- Faction
- The Tenders
- In-world description
- The vine's path. Two S-curves, mirrored like a vine climbing both sides of a trellis; the Glass grows a coil round the target in an instant and pulls tight. No corners, because growth never turns sharply. Greenvault folk use it on runaway goats.
- Spell
- Coil
- Faction, style
- Tenders, mirrored
- Shape
- S: start upper right, over the top to the left, down through the middle, round the bottom; no corners
- Size, breath
- 34 mm, 700 ms
- Effect
- 24 damage
- Learned
- Act 1, Drowned Steps (whole glyph)
From Spell Set › Attack
- Spell
- Coil
- How
- Learned at the end of the Prologue; Act 1 is where it's used: the road glint, the Ring, the Wyrm.
- Where
- —
- Required?
- Yes (already known)
Concept art of the effect

Prompt
Spell effect concept for a mobile JRPG battle, Coil: two mirrored S-shaped ribbons of white-gold and sky-blue light spiral around each other into one heavy twisting coil and slam down onto a chunky stone training golem, crushing impact, cracked ground, chips of stone flying, strong symmetric motion arcs, over-the-shoulder battle camera, training ground arena, stylized hand-painted 3D JRPG game art, soft cel shading --ar 16:9 --sref https://cdn.midjourney.com/e1cbf51f-e14d-47a5-878b-299fa466e41a/0_1.png`,
Midjourney job ecfcfe51-b1a6-43a1-b193-a83be4e1e052 / 1, 3

Prompt
Spell effect concept for a mobile JRPG battle, Coil: two mirrored S-shaped ribbons of white-gold and sky-blue light spiral around each other into one heavy twisting coil and slam down onto a chunky stone training golem, crushing impact, cracked ground, chips of stone flying, strong symmetric motion arcs, over-the-shoulder battle camera, training ground arena, stylized hand-painted 3D JRPG game art, soft cel shading --ar 16:9 --sref https://cdn.midjourney.com/e1cbf51f-e14d-47a5-878b-299fa466e41a/0_1.png`,
Midjourney job ecfcfe51-b1a6-43a1-b193-a83be4e1e052 / 1, 3
Elsewhere in the Codex
The casting prototype ships eight spells, five Evane and three Facet. Repel, Coil, Gale and Facet Seal came first, one per drawing style; Brace, Mend, Bevel Lash and Prism Snare are the first batch from the Spell Set tab. Each lives in its own data file (
Assets/StreamingAssets/Data/Spells/<id>.json), and the scorer checks exactly what this table describes. Shapes are written as the player sees them on a landscape phone; "outward" means toward that thumb's screen edge.From Mobile RPG Codex › Spellcasting › Spell Book (Prototype)
- Spell
- Coil
- Speed within each stroke
- One continuous flow with no stops; eases slightly through the top and bottom turns
- Tempo across both thumbs
- Thumbs mirror each other moment by moment
- Breath window
- 700 ms
Thumb sync allows about 80 ms between the thumbs' start and end times before it costs a third of the timing score. A spell can set its own breath window (Coil, Facet Seal, Mend, Bevel Lash and Prism Snare do); the default is 600 ms, and it is meant to grow later with player level and gear.
Overall quality weights the parts: shape 35%, corners 20%, sync 20%, pace 15%, size 10%. Coil and Mend override them (shape 40%, pace 20%, sync 20%, corners 10%, size 10%), since they have no corners to judge. A cast fizzles below 45% overall, when either thumb's shape scores under 30%, or when breath runs out. Quality sets power: a cast just over the fizzle line hits at 0.6x, a perfect one at 1.5x, with most of the gain at the top, so precision keeps paying off. Perfect needs zero error, which no hand produces; careful test draws land around 88–96%. All of these numbers are tunable on the device and are first guesses until playtesting.
Top row, left to right: Repel, Coil, Gale, Facet Seal. Second row: Brace, Mend, Bevel Lash, Prism Snare. In each pair the left half is the left thumb and the right half the right thumb; the white dot is where the stroke starts. The image is rendered from the spell data files, the same way the in-game spell book draws its icons.
- Composite
- Tempest
- Chain
- Gale, then Coil
- Effect
- 55 damage, 1 s stagger
- Breath window
- 1,105 ms
From Mobile RPG Codex › Spellcasting › Composite Spells (Prototype)
(Idea) Warm thumbs: the door-mark has always felt warm under the protagonist's thumbs, and they have never asked anyone whether that is usual. After tracing Coil at the Drowned Steps, Aske hears this and says: "Warm. Huh. Mine never were." A recurring motif for the even pair.
(Idea) The first fragment is Coil, at the Drowned Steps at the end of the Prologue, with Aske teaching the method.
From Story Bible › Protagonist and Mentor › Learning a spell by tracing a glyph
Aske walks the player along the Sallow to the Drowned Steps, a Still Age shrine half under the river, and teaches fragment tracing there. Coil is the first fragment. Aske turns back for home.
From Story Bible › Story Outline › Prologue: The Door-Mark (Sallowbank)
Spells: Repel, Coil.
From Story Bible › Story Outline › Prologue: The Door-Mark (Sallowbank)
Set piece: the Sallow Wyrm, a river serpent made of reflections, rising at the Drowned Steps once Aske has gone. Repel to stagger it, Coil to hurt it.
Spells: Coil, learned at the end of the Prologue, put to work against the Wyrm.
Data: Assets/StreamingAssets/Data/Spells/coil.json