Rework Bluemage!

[Auryan]

Hm... Do we need another AoE heal, tho? White Wind pretty much covers that. Still, if it's fixed potency and is cheaper it might be better in some situations, like for example after Stack Marker, when everyone is low on HP. So going this -> White Wind might be better.

It could be the opposite of WW where the lower your HP, the higher the potency. Kind of like an emergency heal when WW won't cut it.

Of course this a hunch based on the warmoura and how it only heals when a nearby enemy is lower than 50%.