There has been mixed feedback on Flame Surge some find it worth while, yet some prefer Volc. orb.
I guess what I look at firtsly in a skill that I intend on utilising is firstly is it still going to be useful in Legendary difficulty. Now I know Flame surge hits multiple targets and never misses however is the maxed damage output high enough for monsters in Legendary still to feel it?
Reasoning I went with Volcanic Orb is that enevitably it was not going to put out enough damage to be a main form of attack in Legendary however what else does it have going for it after the damage output? And of course it can stun multiple opponents...and what I mean by multiple opponents I mean 9-15 opponents (quantity or orbs that explode out of original orb). From this I recognised that yes this will be very useful when slowing the rate at which I am attacked in Legendary.
One other tip is definately get Eruption. It is by far the most damaging spell from the Earth tree and great to plant under your core dweller when he is surrounded.
