That one sounds like a variation of Reflective Strikes, being even harder to deal with as it doesn’t spawn in one enemy at a time. No no, wait.
You mean, someone in your party would be able to kill you?
Painful. Owch. Can’t imagine facing the Minotaur with that. Poor tank.
How bout…
Intangible: Random enemies get “intangible” buff for a few seconds, making attacks pass through them. If DoT was applied before getting buff, it keeps on getting damage from it.
Invisible: Random enemies get “invisible” buff for a few seconds, becoming invisible but still attackable. If a shard comes with Invisible and Intangible, the same enemy never gets both at the same time.
Dizzy: Every few seconds, players randomly change their point of view to a different angle (like spinning in place).
Probably as mentioned before for graphics issues atm it wouldn’t work, but it would be really fun!
An funny alternative for that would be:
Illusion: Some enemies look like the players in the party. Some players in the party look like enemies that spawn in that dungeon.