So Engineering in WoD has brought us an awesome new little item called Swapblaster.
This handy little device can swap your location with a party or raid member.
It has a small cast time so that you cannot cast it while moving (like when falling off a cliff). However, if you're a Mage with the Ice Floes talent, you can pop that, and then you're able to cast it while moving. This opens up for quite a bit of fun.
Combine it with the Gnomish Gravity Well and you can now blast yourself into the air, pop ice floes and swapblast yourself with someone you don't particularly like and watch them fall. Repeat a couple of times and they're eventually die.
I also used it to transport all of the AFK people at Poundfist on top of the rocks that was there and then watch their WTF reaction when they came back.
You can also use Alter time to teleport back to where they are after you swapblast them. (So, Alter time -> Swapblast -> Alter Time Return, and you're both in the place you started)
There's probably some more stuff you can do with it that I haven't found out about yet.
Hope you enjoy it as much as I have!