Linkdead
 

So my connection is pretty bad and I go linkdead often. When this happens during a fight I am, to my surprise, still alive when I log back in. Today this happened and I logged back in to find harmony cast on me. What exactly is going on?

If you LD while fighting the game takes you over and runs you as an NPC. you continue to fight until you or the mob you were fighting is dead.

A player probably cast harmony on you (they were probably trying to harmony the mobs but you were in range)