A Frenzy or Confusion Effect

The frenzy/confusion effect would confuse mobs, and subsequently cause them to attack any mobs in their vicinity, this could be utilized to clear out large hordes of mobs that may pose danger to the player, and instead cause an ensuing brawl between them. If used on the player the effect may cause them to drop whatever item they are holding, say, they are so confused that they drop their weapon in the middle of a fight. This effect in general may pose a good amount of fun and utility.