Wyvern - Dungeons on Automatic Bestiary

Dragon · 4 hexes · SM +2 Wyvern [Monster Manual, page 259]

Attributes

ST26

DX10

IQ7

HT14

HP26

Will10

Per10

FP16

Basic Speed6

Basic Move7

Dodge10

DR4

Melee attacks

Usage	Level	Damage	Reach
Sharp ClawsSharp Claws (14): thrust 3d cutting (KYOS: 6d-1 cutting), Reach C. Can only use claws when flying.	14	thrust 3d cutting (KYOS: 6d-1 cutting)	C
Sharp TeethSharp Teeth (16): thrust 3d-1 cutting (KYOS: 5d+2 cutting), Reach C.	16	thrust 3d-1 cutting (KYOS: 5d+2 cutting)	C
Tail BarbTail Barb (16): thrust 4d-1 impaling (KYOS: 7d-1 impaling) plus follow-up 1d-1 toxic (5 1-minute cycles, resisted by HT-2, -3 HT after loss of 1/2 HP), Reach C-5.	16	thrust 4d-1 impaling (KYOS: 7d-1 impaling) plus follow-up 1d-1 toxic (5 1-minute cycles, resisted by HT-2, -3 HT after loss of 1/2 HP)	C-5
Tail SlamTail Slam (16): thrust 4d-1 crushing (KYOS: 7d-1 crushing), Reach C-5.	16	thrust 4d-1 crushing (KYOS: 7d-1 crushing)	C-5

Traits (23)

Acute Vision 2
Bestial
Combat Reflexes
Discriminatory Smell
Dislikes the taste of poison of other wyverns
Early Maturation 2
Extra Attack 1
Flight (Cannot Hover; Winged)
Foot Manipulators
High Pain Threshold
Immunity to Paralysis
Immunity to Sleep
Immunity to Wyvern Poison
Infravision
Loner (12)
Nictitating Membrane 2
Night Vision 5
No Fine Manipulators
Penetrating Voice
Peripheral Vision
Restricted Diet (Carnivore)
Scales
Short Arms

Skills (3)

12Aerobatics
16Brawling
12Stealth

Notes

GCS ancestry draft: gcs/wyvern.gct
Source template total: 228 points.
Library-rebuilt template total: 228 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.
Size 4 hexes.

Encounter rating

CER70

Offense39

Protection31

Threat tiermajor

Appearing1

Wandering2

GCS v5 downloads

Where this one came from

Source record: Wyvern [Monster Manual, page 259]
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/wyvern.gct
Source template total: 228 points.
Library-rebuilt template total: 228 points.
CER was computed from parsed Typical Stats using the Dungeons On Automatic baseline CER path.
CER recomputed from the reviewed Typical Stats through the canonical Dungeons on Automatic CER path: OR 39, PR 31, CER 70, threat tier major.
Encounter metadata derived (solitary): average number appearing 1, wandering weight 2. 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.