From Lineage 2 Encyclopaedia

Properties

Enervation
For 1 minute, makes the enemy lose his ambition, and decreases Atk. Spd./Speed/Casting Spd. at a certain rate when damage is received.
Class	Inspector
Type	debuff
Attribute	-
Recast time	2 s
Cast time	3 s
Cast range	600
Classes with same skill	Inspector, Judicator

Skill Upgrade

Lvl. to Learn	Skill Lvl.	Description	MP Consume	HP Consume	SP
60	1	For 1 minute, makes the enemy lose his ambition, and decreases Atk. Spd./Speed/Casting Spd. at a certain rate when damage is received.	55	0	194
64	2	For 1 minute, makes the enemy lose his ambition, and decreases Atk. Spd./Speed/Casting Spd. at a certain rate when damage is received.	60	0	295
68	3	For 1 minute, makes the enemy lose his ambition, and decreases Atk. Spd./Speed/Casting Spd. at a certain rate when damage is received.	64	0	632
72	4	For 1 minute, makes the enemy lose his ambition, and decreases Atk. Spd./Speed/Casting Spd. at a certain rate when damage is received.	67	0	997