Originally Posted by
Undefetter
It is more powerful, its just the power is pure utility. I agree, its very poorly worded though because, unlike with damage/survivability increases like Fire and Earth Ele, you can't really quantify utility increases like that. However, they are right, the damage of Storm Elemental remains unchanged by Primal Elementalist.
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The leeway in it comes in the fact you have a 9 second window in which to cast Flame Shock, which is enough time to cast two Shocks. Just remember that Flame Shocks damage isn't exactly HUGE, and whilst it is better to use UE on a 2 stack Flame Shock, you can still use it on Lava Burst for some bonus damage, and that bonus damage, plus any potential lost FlS ticks/Lightning Shield stacks will outweigh the extra FlS damage.
If you are at less than 15 Lightning Shield stacks, you should look to cast Flame Shock ASAP (as soon as Lava Burst stays on cooldown) as you are in no danger of overcapping if you cast FlS right now.
If possible you should use UE (assuming you have Unleash Fury, otherwise don't bother with UE at all) before casting that Flame Shock, even if it delays it a bit. However, if you start creeping over that 15 stack mark for Earth Shock, you are going to start burning Lightning Shield stacks in the shock cooldown, so the damage gained by UE is going to be eaten up by lost stacks. It sort of depends on your stat values and your reaction times to procs, but basically...
tl;dr - At less than ~13 stacks of Lightning Shield or you have over 6 seconds left on Flame Shock, and UE is up in a second or two, feel free to wait. If you are at more stacks than that, your Flame Shock has less time than that, or your UE is on cooldown for longer than that, you should just go ahead and cast Flame Shock right away. Letting Flame Shock fall off or letting yourself hit max stacks is worse than getting that UE with Flame Shock.
tl;dr the tl;drAbove all else never let Flame Shock fall off and endevour to never let yourself lose Lightning Shield stacks.