Rank 1 Increases the damage done by your Fire Totems and by your Flame Shock and Fire Nova spells by 5%, as well as increases the duration of your Flame Shock spell by 3 sec.
Rank 2 Increases the damage done by your Fire Totems and by your Flame Shock and Fire Nova spells by 10%, as well as increases the duration of your Flame Shock spell by 6 sec.
Rank 3 Increases the damage done by your Fire Totems and by your Flame Shock and Fire Nova spells by 15%, as well as increases the duration of your Flame Shock spell by 9 sec.