Idol of N'Zoth

You create Horrific Visions when casting harmful spells on enemies.

At 50 stacks of Horrific Visions, your target sees a nightmare, dealing Shadow damage and granting you 2.03333 Insanity over 3 sec.

At 100 stacks, your target witnesses a vision of N'Zoth, dealing Shadow damage and granting you 6.1 Insanity over 3 sec.