Rank 1: Any time you score 2 non-periodic spell criticals in a row using Fireball, Fire Blast, Scorch, Living Bomb, or Frostfire Bolt, you have a 33% chance the next Pyroblast spell cast within 10 sec will be instant cast.

Rank 2: Any time you score 2 non-periodic spell criticals in a row using Fireball, Fire Blast, Scorch, Living Bomb, or Frostfire Bolt, you have a 66% chance the next Pyroblast spell cast within 10 sec will be instant cast.

Rank 3: Any time you score 2 non-periodic spell criticals in a row using Fireball, Fire Blast, Scorch, Living Bomb, or Frostfire Bolt, you have a 100% chance the next Pyroblast spell cast within 10 sec will be instant cast.