Cascading Inferno

Each time you cast Detonate you gain 1 stack of Cascading Inferno, up to 12 stacks. Cascading Inferno When you have at least 4 stacks your next Infernal Wave is Instant Cast, has +100% Critical Strike chance, and generates twice the amout of Cinders. GRIEVOUS CRITICAL STRIKE Any critical strike chance you have beyond 100% causes a grievous critical strike. Grievous critical strikes increase the base damage of the hit by an amount equal to the overflowing critical strike chance.