A character from your faction dies too.
You have been given the task to kill one enemy who will die, but will also have to choose someone in your own faction to die as well. If you don’t, you will be turned into Nathanos’ servant.
I’d choose: we kill Delas Moonfang on the Alliance, and to make things fair let’s kill Liadrin on the horde. The two most annoying, dumb paladins gone, good riddance.
Kill Baine, murder Anduin, let war and chaos reign.
Slyvanas and Magni. That jerk teleports everywhere and can’t give me a lift! “See you there, champion,” my foot.
Kill Nathanos, get enslaved to a dead person, become free, and then turn around and kill Anduin and replace him with Edwin Vancleef instead. “FOR THE PEOPLE OF THE ALLIANCE!!! DIE LOYALIST SKUM!! LAPDOGS, ALL OF YOU!!”
Janina and Bane, you can have Nathanos too. done
Kill meera, lose Mia greymane.
Nathanos.
Pick anyone, no sacrifice is too great.
I choose Sylvanas and Mechatorque. This should be no surprise to anyone who knows me 
Sylvanas and Nathanos are no longer part of the Horde.
Well that’s just mean, why u do dis?
To finally push greymane to the point of horde genocide.
She dies, rabid doggies purge all things horde.
If only Genn became night warrior. 
Talanji and Shaw. Both are annoying and not in an entertaining way …so win/win.
Kill Baine on the Alliance, and Thrall on the Horde
On second thought, Baine and Malfurion.
Tyrande loses the last thing grounding her, horde loses their only attempt at peace.
War.
words, words, words. Master wants murders
Definitely Sylvanis and Malfurion. Go die a violent death the both of you!
Hmm, well, I got to admit I like the way you think. … /Sneaks 75+ rep
Good choice.
Yeah that’s fair.
Tyrande’s demise is long overdue. Been waiting since WC3 RoC
Clearly not horde. 
You guys have 2 racial leaders for us to kill for achievment. We’re slowly whittling you down.
I’ll kill the Horde demon hunter player character and for that i’ll sacrifice the Alliance demon hunter player character
This one right here. Beautiful.