Ruby / Sapphire mechanics

[Lineage2Ertheia]

They increase soulshot/spiritshot damage, not total damage. They do not have active skills, upon activation they change visual effect of the spiritshot or soulshot.

tests and more info here:
http://boards.lineage2.com/showthread.php?t=266429
 

[robspierre]

Well blessed spiritshot / soulshot increases damage by 100% (double damage), meaning 100% (base) * 2 = 200%
+20% spiritshot / soulshot damage means increasement of bonus damage, not total damage, thus:
100% (base) * 2.2 (bonus 120% damage) = 220% damage

Difference between 200% dmg and 220% dmg is 10% increasement in overall damage.

(just for clarification  )