Thanks a lot to Dorchania-Silvermoon for figuring out the server jump strat with these mobs!
If you want a great and efficient way to level in 8.1.5, then this method feels like one of the better ones. If you have a solid 5 man group, you could be any level at all, and still gain A LOT by doing this.
The way the strategy works is by killing Silent Boris and Lindel the Snatcher. They are 2 elite mobs in a cave in Tiragarde. The EXP they give scales depending on your level, all the way down to lvl 1. The EXP gain is also increased by each additional member in your party. This along with having people from different realms, makes you able to quickly change shard and get a new spawn of them quickly.
This makes you able to power level really efficiently, depending on how good group you have. If you have heirlooms, gems, preparations. I am fairly certain the time for each level would go down to 20 minutes at 110-120. And with rested EXP, all the way down to 10 minutes a level.
Also, the way you reach this location is by boat if you are Alliance. If you are a lowbie Horde, then I suggest you get a summon from your teammates!
World of Warcraft OST.
Composers: Jason Hayes, Tracy W. Bush, Derek Duke, Glenn Stafford.
Shimmering Flats 0:00
Burning Steppes 4:49
World of Warcraft: Battle for Azeroth OST
Composers: Neal Acree, David Arkenstone, Clint Bajakian, Sam Cardon, Derek Duke, Jason Hayes, Leo Kaliski, Kory McMaster, & Glenn Stafford.
Stormsong Mountain 1:25
World of Warcraft: Mists of Pandaria OST.
Composers: Russell Brower, Nean Acree, Sam Cardon, Edo Guidotti and Jeremy Soule.
Ancient Pandaria 3:11