Phantom Ranger

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

Lvl	Skill	From whom	Where	Chance	With premium
40	Hex	Manashen Gargoyle 40	Ivory Tower Crater	0.25%	0.38%
70	Focus Skill Mastery	Conjurer Bat 69	Aden Territory, Blazing Swamp, Field of Massacre	0.25%	0.38%