A second possibility is to use Scorch before instant Pyroblast. The Scorch cast time is long enough to allow any Fireballs or Frostfire Bolts to travel to their target, so if it crits it won't munch any ignites. Also, it has no travel time of its own, so it's crit won't be munched. And finally, it will refresh the Improved Scorch debuff on the target (Assuming the mage has this talent, which most deep-fire mages do). This bug in the ignite mechanic has given scorch a synergy with Hot Streak, however this synergy is by fault and not by design.