Fanaticism

Spells you cast yourself have more Cast Speed, reduced Cost, and increased Area of Effect

Fanaticism is a buff currently only came from Instruments of Zeal ascendancy passive skill.

Version history

Version	Changes
3.14.1	Clarified that Fanaticism grants reduction of all costs (not only mana costs). This is purely a description change.
3.13.0	Introduced to the game.