I believe the case is that you want to be in Umbral phase as little as possible and at lower levels your MP will run out/refill before Transpose is up. So in this case (without Blizzard III or Fire III) your rotation looks like Fire I until out of MP and then Transpose. Thunder I and then Blizz I, mana should have tticked back so Restart Fire I. Rinse and Repeat.
It changes slightly as you progress but you want to use it really to get into Umbral asap and Fire I wll get you out fast.
It changes slightly as you progress but you want to use it really to get into Umbral asap and Fire I wll get you out fast.