I’m playing by cold Shaman build and faced with the following issue today: when I tried to activate Ice Thorns on the icy land near Nomad Camp location exit (see screenshot below) I saw the corresponding character pose animation, but no thorns were thrown:
I can see that stack icon was active, but there were no throwing thorns animation. When I tried to attack mob from this area I also didn’t notice expected damage effect from thorns.
Once I changed the location, i.e. moved to North, the issue dissapeared:
It was the first time when I faced with such issue. Below you can find sreenshot with Ice Thorns skills tree: