|description = Grants two Abyss Atlas Passive Skill Points
|description = Grants two Abyss Atlas Passive Skill Points
|inventory_icon = Lightless Book of Knowledge
|inventory_icon = Lightless Book of Knowledge
|drop_text = Obtained by completing [[Abyss]] encounters in maps, completing an [[Abyssal Depths]], defeating an [[Abyssal boss]], and defeating [[Vessel of Kulemak]].
|drop_text = Obtained by completing an [[Abyss]] encounter in a map, completing an [[Abyssal Depths]], defeating an [[Abyssal boss]], and defeating [[Vessel of Kulemak]].
Acquisition Drop restricted Drop level: 1 Obtained by completing an Abyss encounter in a map, completing an Abyssal Depths, defeating an Abyssal boss, and defeating Vessel of Kulemak.Metadata Item class: Quest Item Metadata ID: Metadata/Items/QuestItems/SkillBooks/AtlasSkillBookAbyss1
Ritualistic Book of Knowledge I-IV are quest items that can be used to gain two Abyss Atlas passive skill points. A total of 4 Lightless Books of Knowledge can be obtained.
Item acquisition
Lightless Book of Knowledge has restrictions on where or how it can drop.
