From Lineage 2 Encyclopaedia

Properties

Focus Attack
When using a spear, allows user to attack a single enemy with increases in Accuracy of 2 and Critical Damage of 10%.
Class	Warlord
Type	aura
Attribute	-
Recast time	0 s
Cast time	2 s
Cast range	0
Classes with same skill	Warlord, Dreadnought

Skill Upgrade

Lvl. to Learn	Skill Lvl.	Description	MP Consume	HP Consume	SP
40	1	When using a spear, allows user to attack a single enemy with increases in Accuracy of 2 and Critical Damage of 10%.	18	0	28
49	2	When using a spear, allows user to attack a single enemy with increases in Accuracy of 3 and Critical Damage of 15%.	22	0	68
58	3	When using a spear, allows user to attack a single enemy with increases in Accuracy of 4 and Critical Damage of 20%.	27	0	154
66	4	When using a spear, allows user to attack a single enemy with increases in Accuracy of 5 and Critical Damage of 25%.	31	0	406
74	5	When using a spear, allows user to attack a single enemy with increases in Accuracy of 6 and Critical Damage of 30%.	34	0	1428