Wait... that makes no sense though. Fire/Blizzard I/II only grant 1 stack, and will outright drop your Astral/Umbral if cast from the other element; a straight Fire II from Umbral Ice would drop your Enochian, preventing Fire IV and Foul, along with dropping your Umbral Hearts. Were you using Transpose or a cast of Fire III to switch to Astral Fire? Assuming you were, that would in any case be three fire spells cast in Astral Fire before your first Flare, using up all your Hearts and thus preventing the use of a second Flare.
