Tyrant

3 books. Every source is listed: one book often drops from several monsters and at different chances.

Lvl Skill From whom Where Chance With premium
70 Fortitude Conjurer Bat 69 Aden Territory, Blazing Swamp, Field of Massacre 0.25% 0.38%
70 Riposte Stance Cindereye Basilisk 72 Blazing Swamp 0.25% 0.38%
75 Final Secret Hames Orc Overlord 75 Blazing Swamp, Aden Territory 0.25% 0.38%