Infernal Flame could use visual feedback

Would be nice to have a character effect, or a screen effect (say flames along bottom or edges of screen) to indicate when infernal flame is "high" (above 65%).

It's hard to juggle looking at the mana sphere and back to the screen and back to the sphere, etc.

usually i have to count just passed two seconds in my head to try and time my next skill for right after the flames start to drop. This inevitably results in a mistake which blasts me for the huge fire damage.f