Catharsis
Catharsis is a Passive skill from Epic Fight. A Skill Book carrying it teaches it; in the Epic Fight quest chapter it is a Tier 1 book.
Usage#
Skill tooltip
Charges your weapon when dodging attacks.
Right-click the book and press Learn, then equip the skill in the Passive slot of the Skill Editor (K by default). It works on its own while equipped.
Crafting#
Quests#
The Epic Fight chapter asks for this book and gives 3 XP levels.