The Storm Tempest enemy (not sure which stage it spawns, but I think it was two) will spam a storm beetle that not only does 150 damage, but also leaves a -100 debuff. I watched as this mob casted it three times in a row without losing any pips (mob ended up with seven pips after those three rounds. There is no way a spell like this should cost 0 pips. I checked spells that our own characters can obtain and none of them had this spell. The closest was the storm rat that had a beetle that did 125 or 175 damage for 1 pip....but that one did not leave a negative debuff.
Please fix this unbalanced spell in the enemy inventory.