Discovered this while leveling my shaman.
Recipe:
1 teaspoon of your own character
1 handfull of the person you wish to kill
A group of aggressive mobs.
And thats it, now, over to how you make the pancake-mix:
First of all, you will need to be near a group of aggressive mobs. Now what you do, is you pull all of them. Make sure you do a body-pull, and dont damage them. Now when you are running away you invite the other person to your group. As you can see you will get the Crown-icon up at your pic, even before he accepts. Now, just keep running like the little girl you are, once you are too far away from the spawnpoint the mobs will usualy go back, but now since you have invited the other person, they will instead go for him!
Burn in the oven at 250 celsius for three days.
Feel free to sprinkle with some chocolate for extra taste.
(Cba to upload pictures as I would have no idea what to take a picture of here...)
Feel free to ask if you didn't understand some parts.