Will-o’-wisp

Aberration (Air) · SM -4 Will-o’-wisp (Enraged Eggplant; answers SRD 3.5, SRD 5.1)

A drifting ball of pale light about the size of a fist, harmless-looking and almost impossible to affect with magic. It leads travellers into bog, cliff and worse, waits for the accident to finish, and it enjoys the whole process.

Attributes

ST1

DX16

IQ11

HT10

HP1

Will12

Per13

FP10

Basic Speed6.5

Basic Move13

Dodge9

DR2

Melee attacks

Usage	Level	Damage	Reach
ShockShock (16): 1d burning surge, Reach C. Treat any metallic armor as DR 1 against this attack. Targets stuck by this attack must make an HT roll, at -1 per 2 points of injury, or be physically stunned. On subsequent turns, they can roll HT to recover.	16	1d burning surge	C

Traits (15)

• 360° Vision (Panoptic I)
• Callous
• Dependency (Terror and death; Illegal; Monthly)
• Doesn’t Eat or Drink
• Flight (Lighter than Air)
• Illumination
• Infravision
• Injury Tolerance (Homogenous, No Head, No Blood, No Eyes, No Neck)
• Invertebrate
• Invisibility (Accessibility, Only when Illumination is off; Affects Machines; Fringe)
• Magic Resistance 7 (Improved)
• No Legs (Aerial)
• No Manipulators
• Sadism (12)
• Signals (Blinker)

Skills (1)

• 14Observation

Notes

• GCS ancestry draft: gcs/will-o-wisp.gct
• Source template total: 183 points.
• Library-rebuilt template total: 183 points.
• CER was computed from parsed Typical Stats using the Dungeons On Automatic baseline CER path.
• Review attacks, special abilities, encounter frequency, treasure, grappling, and GCS modifiers before approval.

Encounter rating

CER17

Offense20

Protection-3

Threat tierminor

Appearing1

Wandering4

Tags

• srd-3-5
• srd-5-1
• aberration
• air

GCS v5 downloads

• ↓ Character sheet (.gcs)Open directly in GCS
• ↓ Ancestry template (.gct)Apply to any character

Where this one came from

Source record

Will-o’-wisp

Source system

gurps_4e_fan_conversion / author_permission

Released under

cc_by_4_0

Conversion

0.2.0-reviewed

Review status

approved

Credit

Original GURPS conversion by Enraged Eggplant, from Monsters (May 11, 2024); adapted and republished with permission.

Description

Written by Dungeons on Automatic, released under cc_by_4_0

• GCS ancestry draft: gcs/will-o-wisp.gct
• Source template total: 183 points.
• Library-rebuilt template total: 183 points.
• CER was computed from parsed Typical Stats using the Dungeons On Automatic baseline CER path.
• Issue #5: 0 special ability construction(s) restored and 1 annotated with the source's stated cost. 1 save-or-disable construction(s) are scored through the affliction term at the source's stated point cost, or at Binding ST where the source builds the ability as a Binding.
• CER recomputed from the reviewed Typical Stats through the canonical Dungeons on Automatic CER path: OR 20, PR -3, CER 17, threat tier minor.
• Conversion baseline reported OR 17, PR -3, CER 14 (tier minor). The reviewed values come from the consumer CER implementation, which rounds damage once after the damage-type multiplier and credits ranged accuracy; the conversion baseline ceilinged the damage base first and ignored range.
• Encounter metadata derived (solitary): average number appearing 1, wandering weight 4. Encounter metadata derived for 0.2.0 from the reviewed threat tier and creature class (appearing: minor 4 / standard 2 / major 1 / severe 1, forced to 1 for solitary classes — including swarms, which are a single multi-body creature — and raised to 6 for gregarious minor creatures; wandering weight: minor 4 / standard 3 / major 2 / severe 1). The fan-conversion source states no appearing-in-numbers or wandering values, so these are derived, not source mechanics.
• Lair, treasure, and grappling remain unpopulated in 0.2.0 by package policy: the authorized fan-conversion source states no lair, treasure, or grappling values, and review declines to invent them. See review/policy/0.2.0-empty-field-policy.md.
• Description text is original Dungeons on Automatic prose written from this record's own converted statistics and from the project's art direction for the creature. It is not derived from the authorized fan-conversion source, which states no creature descriptions, and not from any SRD. It carries its own authorship and CC BY 4.0 terms in the description field. See review/policy/description-policy.md.
• Review approved by automated-mechanical-review on 2026-07-26 (batch ee-2026-07-26-b4-special-mechanics); GCS fidelity check passed, DOA playability check passed.
• Special-mechanics record. Mechanics the CER path cannot price are named per record in review/reports/cer-audit.md rather than folded into the number, and encounter counts are capped where a save-or-disable attack is present.