🧙‍♂️ Brought to you by Peptides.gg — Use code UO20 for 20% off — GLP-1's, 90+ Peptides and more!
From the Codex of Ultimate Wisdom

Skill Masteries

A folio of the realm

Skill Masteries

Skill Masteries are special abilities granted to characters who train a skill to at least 90.0 real skill (skill from items does not count). Each eligible skill has its own mastery — a set of passive and active abilities — and characters access their masteries through a Book of Masteries (or, for bards, a Book of Bardic Masteries; both books work for all skills). Skill Masteries were introduced in Publish 81 (October 2013) and re-shape the late-game skill ladder by giving every supported skill a useful active ability that scales with mastery tier and base skill.

Only a single skill's mastery can be active at any one time. Switching active skill: left-click the Masteries book"Switch Mastery." A character with multiple GM/Legendary skills must choose which active mastery to carry into a fight.

Mastery tiers

Each skill has three tiers of mastery, gated by Mastery Primers that the player consumes to unlock that skill's mastery at that tier:

Tier Effect Source
Tier 1 Granted by reading any Tier 1, 2, or 3 Mastery Primer for the skill. Lowest intensity. All Champion Spawn drops; Charybdis; Scalis
Tier 2 Granted by reading a Tier 2 or Tier 3 primer (also retroactively grants Tier 1). Medium intensity. Same
Tier 3 Granted by a Tier 3 primer (also retroactively grants Tiers 1 and 2). Maximum intensity. Same

You do not need to read all three primers in sequence: a Tier 3 primer grants you Tiers 1, 2, and 3 in one read. A higher-tier primer never lowers your active tier.

Your tier level controls the intensity of the mastery's effects — damage scaling, duration, area of effect.

Skills with masteries

The mastery system covers seven skill families. Within each family, individual skills have their own masteries:

Barding skills

Combat skills

Warrior specialities

Spellcasting skills

Thieving skills (currently mastery-supported)

Many thieving skills not yet supported — see "Skills without masteries" below.

Wilderness skills

Skills WITHOUT masteries

39 skills currently have no associated mastery. These include all the crafting skills and many secondary/utility skills:

Crafting skills (none have masteries) Alchemy · Blacksmithing · Bowcraft / Fletching · Carpentry · Cooking · Inscription · Lumberjacking · Mining · Tailoring · Tinkering · Imbuing

Useless / utility skills (no masteries) Arms Lore · Begging · Camping · Cartography · Detecting Hidden · Evaluating Intelligence · Fishing · Focus · Forensic Evaluation · Healing · Hiding · Item Identification · Lock Picking · Meditation · Remove Trap · Resisting Spells · Snooping · Spirit Speak · Stealing · Stealth · Tactics · Taste Identification · Tracking · Veterinary · Animal Lore · Anatomy · Herding

The Stratics-side documentation explicitly enumerates the 39 (a stable count for the Pub81+ era).

Active vs passive masteries

Each mastery has both:

Type Behavior
Passive abilities Active at all times while the mastery is the selected mastery. Examples: damage bonuses, AC bonuses, regeneration ticks, armor-class shifts.
Active abilities Must be activated (button-clicked or macro'd) to take effect. They typically have a mana/stamina/skill-check cost and a cooldown. Examples: Onslaught (Swords), Pierce (Fencing), Stagger (Mace), Inspire (Music), Holy Smite (Chivalry).

A character not using their active masteries is still benefiting from the passive — but the active abilities are where the build's late-game punch comes from.

Mastery title

Each skill mastery also allows the selection of an associated title (e.g., "Mage Master", "Bardic Master", "Knight"). Access via: left-click your player → "Open Titles Menu" → select from your unlocked mastery titles.

See also

← Return to the Codex
Folio inscribed by the Scribe  ·  merge  ·  2026-05-14
Folios in the Codex incorporate material adapted from community-maintained Ultima Online wikis, used under the Creative Commons Attribution-ShareAlike 3.0 License. Synthesised, restructured, and rebranded by the Scribe.