From Lineage 2 Encyclopaedia

Properties

Weapon Mastery
Increases P. Atk. by 1.5 and M. Atk. by 1.9.
Class	Shillien Oracle
Type	passive
Attribute	-
Recast time	0 s
Cast time	0 s
Cast range	0
Classes with same skill	Human Mystic, Wizard, Sorcerer, Necromancer, Warlock, Cleric, Bishop, Prophet, Elven Mystic, Elven Wizard, Spellsinger, Elemental Summoner, Elven Oracle, Elven Elder, Dark Mystic, Dark Wizard, Spellhowler, Phantom Summoner, Shillien Oracle, Shillien Elder, Archmage, Soultaker, Arcana Lord, Cardinal, Hierophant, Mystic Muse, Elemental Master, Evas Saint, Storm Screamer, Spectral Master, Shillien Saint

Skill Upgrade

Lvl. to Learn	Skill Lvl.	Description	MP Consume	HP Consume	SP
7	1	Increases P. Atk. by 1.5 and M. Atk. by 1.9.	0	0	1
14	2	Increases P. Atk. by 2.8 and M. Atk. by 3.5.	0	0	2
20	3	Increases P. Atk. by 4.5 and M. Atk. by 5.7.	0	0	4
25	4	Increases P. Atk. by 5.7 and M. Atk. by 7.2.	0	0	6
25	5	Increases P. Atk. by 6.7 and M. Atk. by 8.3.	0	0	6
30	6	Increases P. Atk. by 8.3 and M. Atk. by 10.3.	0	0	9
30	7	Increases P. Atk. by 9.5 and M. Atk. by 11.9.	0	0	9
35	8	Increases P. Atk. by 11.6 and M. Atk. by 14.6.	0	0	11
35	9	Increases P. Atk. by 13.3 and M. Atk. by 16.6.	0	0	11