Harmless trolling

A good troll shouldn’t belittle the trolled, unless said trolled is an unfunny troll. I used to have /cancelaura for hunters and rogues when I tanked. I wouldn’t let the mobs kill them but it was a nudge to let them know I could. I don’t think I’ve ever just let someone die unless it was a choice on who to save. Now healing for dps taking unnecessary damage I have the riptide challenge, will they get out of the bad before it kills them? I haven’t done that in a while.