Most spriggan form skills have their own way of generating rage: vines with garden of rage, healing totem with thorn totem memories of eterra or ire of trees, spirit thorns with ancestral call. Meanwhile, thorn shield must depend on casting the 3 skills mentioned above to generate rage.
My suggestion: please allow ancestral call to affect thorn shield too, instead of only spirit thorns.
Otherwise the glacial grove node is quite useless because its mana consumption is not light, and when you have to spend time casting other skills to generate back rage, maintaining at least 6 stacks of maelstrom is a mighty difficult task.
I just use the Spriggan belt for my Thorn Shield build. It would be nice if there were another way to keep Spriggan form up with Thorn Shield, but the build is already pretty tight on skill points.
I’m using that now. But as I say, the disruption every few seconds to cast vines is bad, very bad for stacking maelstrom, unlike spirit thorn which can regen rage and stack maelstrom at the same time. Same for vines and totem builds that can deal dmg and regen rage at the same time.
