From Lineage 2 Encyclopaedia

Properties

Elemental Burst
Detonates an Elemental Destruction to inflict severe damage with 569 Power on a single target.
Class	Feoh Storm Screamer
Type	active
Attribute	-
Recast time	6.69999981 s
Cast time	6.08 s
Cast range	1100
Classes with same skill	Feoh Storm Screamer

Skill Upgrade

Lvl. to Learn	Skill Lvl.	Description	MP Consume	HP Consume	SP
85	1	Detonates an Elemental Destruction to inflict severe damage with 569 Power on a single target.	137	0	10000
90	2	Detonates an Elemental Destruction to inflict severe damage with 618 Power on a single target.	154	0	370000
95	3	Detonates an Elemental Destruction to inflict severe damage with 649 Power on a single target.	166	0	1000000
99	4	Detonates an Elemental Destruction to inflict severe damage with 683 Power on a single target.	179	0	5000000