earth shield

tried /castsequence [talent:3/2] reset=combat earth shield, null but not working, is there anyway to get it to cast earthshield (self) only when its not on me? sorry if its an obvious answer, im having a brain fart

GSE cannnot distinguish between if you have a buff already or not when it casts. And if it could, it would be in the realm of botting and thus banned. For an ability like that, a mod or manual use sounds best.