From Lineage 2 Encyclopaedia

Properties

Invocation
Decreases P. Def. by 90% and recovers 54 MP every second for 30 seconds. The status is canceled when damage is incurred.
Class	Bishop
Type	active
Attribute	-
Recast time	600 s
Cast time	2 s
Cast range	0
Classes with same skill	Bishop, Elven Elder, Shillien Elder, Cardinal, Evas Saint, Shillien Saint

Skill Upgrade

Lvl. to Learn	Skill Lvl.	Description	MP Consume	HP Consume	SP
56	1	Decreases P. Def. by 90% and recovers 54 MP every second for 30 seconds. The status is canceled when damage is incurred.	27	0	105
60	2	Decreases P. Def. by 90% and recovers 60 MP every second for 30 seconds. The status is canceled when damage is incurred.	28	0	151
64	3	Decreases P. Def. by 90% and recovers 68 MP every second for 30 seconds. The status is canceled when damage is incurred.	30	0	210
68	4	Decreases P. Def. by 90% and recovers 74 MP every second for 30 seconds. The status is canceled when damage is incurred.	33	0	478
72	5	Decreases P. Def. by 90% and recovers 84 MP every second for 30 seconds. The status is canceled when damage is incurred.	34	0	748