AF/UI timers should have a couple extra seconds on them as a matter of course and shouldn't have anything to do with Umbral Hearts. Additionally, we should have a bit more mana so the 2400 situation never happens; we should not be held at the behest of an arbitrary server tick.
What I'd like to see Umbral Hearts in addition to the mana reduction, is simply provide a 5% damage boost to the fire spells cast under it. That way there would be a clear and tangible benefit to casting Blizzard 4 and not just something that is at best a negligible increase over not using it.
