Rogue Wizards

Rogue Wizards

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Force of Nature weird or bugged?
Okay ... I've wasted enough green mana and give up: does this spell actually do anything?
I've aimed it at hordes of enemies - directly and indirectly, near and far away. They all appear to be completely unharmed by it. Even Shadowlords who are definitely vulnerable to nature damage.

Has anyone actually slightly inconvenienced an enemy by using this mighty ultimate nature spell? If so ... how? I'm genuinely curious.