Aberration (Air) · SM -4 Will-o’-wisp [Monster Manual, page 255]
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
Where this one came from
- Source record
- Will-o’-wisp [Monster Manual, page 255]
- 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.
- 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.
- 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.
Enraged Eggplant GURPS monster conversions; used, adapted, and republished with unrestricted permission from the author. Portrait and tokens are AI-generated original art. Sources and credits.