Crystal sea serpent
From UO:PvE Wiki
Crystal sea serpent is a monster or encounter npc. About D31–39.
Development source reviewed on 29 October 2026. In-game availability is unverified.
At a glance#
| Property | Value |
|---|---|
| Classification | Monster or encounter NPC |
| Difficulty | About D31–39 |
| AI | AI_Mage |
| Taming | Not marked tameable |
| Minimum taming skill | Not specified |
| Control slots | Not specified |
Attributes and damage#
| Attribute | Value or range | Interpretation |
|---|---|---|
| Str | 250–450 | Source range |
| Dex | 100–150 | Source range |
| Int | 90–190 | Source range |
| Hits | 230–330 | Source range |
| Damage | 10–18 | Source range |
Resistances#
| Attribute | Value or range | Interpretation |
|---|---|---|
| Physical | 50–70 | Source range |
| Fire | 0 | Source range |
| Cold | 70–90 | Source range |
| Poison | 20–30 | Source range |
| Energy | 60–80 | Source range |
Damage types#
| Attribute | Value or range | Interpretation |
|---|---|---|
| Physical | 10 | Source range |
| Cold | 45 | Source range |
| Energy | 45 | Source range |
Skills#
| Attribute | Value or range | Interpretation |
|---|---|---|
| Magic Resist | 60.1–75 | Source range |
| Tactics | 60.1–70 | Source range |
| Wrestling | 60.1–70 | Source range |
Difficulty notes#
- Freshly constructed ordinary wild creature; no paragon conversion, control/summon scaling, equipped/stat offsets, spell effects or special runtime transformations. Endless Journey expansion branches assumed. Missing skill/resistance assignments use zero. Numeric interval endpoints may not co-occur.
Loot eligibility#
Ordinary treasure is conditional on encounter eligibility
One shared difficulty gold/equipment budget can apply when the requested treasure theme is reached and all runtime eligibility checks pass. Conditions on the source loot calls still apply.
Requested gem, potion and scroll supplements use their separate theme/AI/body checks and one shared optional-supplement roll.
This evaluates definite source exclusions and requested themes. It does not inspect live ownership, summoned status, corpse contents or world spawns.
- Creature is not deleted or a player.
- Creature is not summoned, controlled or bonded.
- Creature has no recorded owners.
- NoKillAwards, IsInvulnerable and Blessed must all be false at generation time.
- Ordinary loot is generated only once; existing generated gold and ordinary equipment consume that budget.
Difficulty-based loot budget#
For eligible wild creatures that request treasure, the difficulty system replaces ordinary gold and equipment rolls with one budget. A difficulty estimate crossing a tier boundary shows every possible tier. The eligibility and source-call conditions above still apply.
| Difficulty | Gold budget | Guaranteed equipment | Extra item chance | Properties | Intensity |
|---|---|---|---|---|---|
| D21–40 | 35–90 | 0 | 35% | 1–2 | 15–35 |
Loot and special drops#
Source calls describe requested themes, conditions and inventory. Ordinary equipment/gold are reconciled through DifficultyLoot; these calls are not additive guaranteed payouts. Runtime dispatch and conditional special rewards still apply.
Drop rules#
| Loot request | Interpretation | Condition |
|---|---|---|
| 1 × Meager loot theme | Requests ordinary treasure within one shared difficulty budget; repeated pack requests do not multiply the payout. | No condition in extracted rule |
| PackLootItem(new SulfurousAsh(4)) | Requests a newly created themed item: Sulfurous Ash. Ordinary equipment is rerolled at death; supply and map limits apply. | if (Utility.RandomBool()) |
| PackLootItem(new BlackPearl(4)) | Requests a newly created themed item: Black Pearl. Ordinary equipment is rerolled at death; supply and map limits apply. | else |
| PackLootItem(new RawFishSteak()) | Requests a newly created themed item: Raw Fish Steak. Ordinary equipment is rerolled at death; supply and map limits apply. | No condition in extracted rule |
Abilities and special attacks#
| Ability definition | Rule | Defined by |
|---|---|---|
| Get Monster Abilities | override MonsterAbility[] GetMonsterAbilities() => _abilities; | SeaSerpent |
| Ability list | { MonsterAbilities.FireBreath } | SeaSerpent |
Taming, resources and other properties#
| Property | Value |
|---|---|
| Treasure Map Level | 2 |
| Hides | 10 |
| Hide Type | HideType.Horned |
| Scales | 8 |
| Scale Type | ScaleType.Blue |
| Fame | 6000 |
| Karma | -6000 |
| Virtual Armor | 30 |
| Body | 150 |
| Base Sound ID | 447 |
Matching slayers#
- Reptile Slayer (Super slayer)
- Snake Slayer (Lesser slayer)
Notes#
- Source type availability does not establish a live spawn, location or current world count.
Source notes
Show 39 references
These references identify the reviewed shard files. Source presence does not establish live availability.
Projects/UOContent/Mobiles/Monsters/ML/Prism of Light/CrystalSeaSerpent.cs:5
Type declarationProjects/UOContent/Mobiles/Difficulty/NpcDifficulty.cs:25Projects/UOContent/Mobiles/Difficulty/DifficultyLoot.cs:29Projects/UOContent/Mobiles/Difficulty/DifficultyLoot.cs:37Projects/UOContent/Mobiles/Difficulty/DifficultyLoot.cs:314Projects/UOContent/Items/Weapons/SlayerGroup.cs:321
Super slayer membershipProjects/UOContent/Items/Weapons/SlayerGroup.cs:389
Lesser slayer membershipProjects/UOContent/Mobiles/Monsters/ML/Prism of Light/CrystalSeaSerpent.cs:13Projects/UOContent/Mobiles/Monsters/ML/Prism of Light/CrystalSeaSerpent.cs:14Projects/UOContent/Mobiles/Monsters/ML/Prism of Light/CrystalSeaSerpent.cs:15Projects/UOContent/Mobiles/Monsters/ML/Prism of Light/CrystalSeaSerpent.cs:17Projects/UOContent/Mobiles/Monsters/ML/Prism of Light/CrystalSeaSerpent.cs:19Projects/UOContent/Mobiles/Monsters/ML/Prism of Light/CrystalSeaSerpent.cs:21Projects/UOContent/Mobiles/Monsters/ML/Prism of Light/CrystalSeaSerpent.cs:22Projects/UOContent/Mobiles/Monsters/ML/Prism of Light/CrystalSeaSerpent.cs:23Projects/UOContent/Mobiles/Monsters/ML/Prism of Light/CrystalSeaSerpent.cs:25Projects/UOContent/Mobiles/Monsters/ML/Prism of Light/CrystalSeaSerpent.cs:26Projects/UOContent/Mobiles/Monsters/ML/Prism of Light/CrystalSeaSerpent.cs:27Projects/UOContent/Mobiles/Monsters/ML/Prism of Light/CrystalSeaSerpent.cs:28Projects/UOContent/Mobiles/Monsters/ML/Prism of Light/CrystalSeaSerpent.cs:29Projects/UOContent/Mobiles/Monsters/Reptile/Magic/SeaSerpent.cs:34Projects/UOContent/Mobiles/Monsters/Reptile/Magic/SeaSerpent.cs:35Projects/UOContent/Mobiles/Monsters/Reptile/Magic/SeaSerpent.cs:36Projects/UOContent/Mobiles/Monsters/Reptile/Magic/SeaSerpent.cs:73Projects/UOContent/Mobiles/Monsters/Reptile/Magic/SeaSerpent.cs:47Projects/UOContent/Mobiles/Monsters/Reptile/Magic/SeaSerpent.cs:51Projects/UOContent/Mobiles/Monsters/Reptile/Magic/SeaSerpent.cs:54Projects/UOContent/Mobiles/Monsters/Reptile/Magic/SeaSerpent.cs:69Projects/UOContent/Mobiles/Monsters/Reptile/Magic/SeaSerpent.cs:68Projects/UOContent/Mobiles/Monsters/Reptile/Magic/SeaSerpent.cs:61Projects/UOContent/Mobiles/Monsters/Reptile/Magic/SeaSerpent.cs:63Projects/UOContent/Mobiles/Monsters/Reptile/Magic/SeaSerpent.cs:64Projects/UOContent/Mobiles/Monsters/Reptile/Magic/SeaSerpent.cs:65Projects/UOContent/Mobiles/Monsters/Reptile/Magic/SeaSerpent.cs:66Projects/UOContent/Mobiles/Monsters/Reptile/Magic/SeaSerpent.cs:38Projects/UOContent/Mobiles/Monsters/Reptile/Magic/SeaSerpent.cs:39Projects/UOContent/Mobiles/Monsters/Reptile/Magic/SeaSerpent.cs:41Projects/UOContent/Mobiles/Monsters/Reptile/Magic/SeaSerpent.cs:13Projects/UOContent/Mobiles/Monsters/Reptile/Magic/SeaSerpent.cs:14
Category: Monsters and NPCs