From Lineage 2 Encyclopaedia

Properties

Corpse Life Drain
Absorbs residual life energy from a corpse to restore your own HP.
Class	Spellhowler
Type	active
Attribute	-
Recast time	5 s
Cast time	1.5 s
Cast range	400
Classes with same skill	Wizard, Sorcerer, Necromancer, Warlock, Dark Wizard, Spellhowler, Phantom Summoner, Archmage, Soultaker, Arcana Lord, Storm Screamer, Spectral Master

Skill Upgrade

Lvl. to Learn	Skill Lvl.	Description	MP Consume	HP Consume	SP
30	1	Absorbs residual life energy from a corpse to restore your own HP.	14	0	9
35	2	Absorbs residual life energy from a corpse to restore your own HP.	15	0	11
40	3	Absorbs residual life energy from a corpse to restore your own HP.	18	0	30
44	4	Absorbs residual life energy from a corpse to restore your own HP.	20	0	37
48	5	Absorbs residual life energy from a corpse to restore your own HP.	23	0	67
52	6	Absorbs residual life energy from a corpse to restore your own HP.	24	0	96
56	7	Absorbs residual life energy from a corpse to restore your own HP.	27	0	105
58	8	Absorbs residual life energy from a corpse to restore your own HP.	28	0	121
60	9	Absorbs residual life energy from a corpse to restore your own HP.	28	0	151
62	10	Absorbs residual life energy from a corpse to restore your own HP.	29	0	200
64	11	Absorbs residual life energy from a corpse to restore your own HP.	30	0	210
66	12	Absorbs residual life energy from a corpse to restore your own HP.	32	0	310
68	13	Absorbs residual life energy from a corpse to restore your own HP.	33	0	478
70	14	Absorbs residual life energy from a corpse to restore your own HP.	33	0	711
72	15	Absorbs residual life energy from a corpse to restore your own HP.	34	0	748
74	16	Absorbs residual life energy from a corpse to restore your own HP.	35	0	1000