Once a mastery is chosen and the associated primer is read, the abilities linked to that mastery can be used freely in the game, with the main requirement being sufficient skill levels and mana. These abilities offer significant advantages in combat and other activities, making the Book of Masteries an essential tool for advanced gameplay

Ultima Online Book of Masteries
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About Book of Masteries
Once a mastery is chosen and the associated primer is read, the abilities linked to that mastery can be used freely in the game, with the main requirement being sufficient skill levels and mana. These abilities offer significant advantages in combat and other activities, making the Book of Masteries an essential tool for advanced gameplay
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