Okay, someone posted the idea, but I've adapted it a bit to be more practical.
The theory is using Raise Dead (A Death-Knight ability) to revive a low level as a ghoul to boost them.
Also, you want the Glyph of the Ghoul, it adds 20% more of your strength to your ghouls. This whole thing works because the ghoul's stats are based on yours.
Idea 1:In an instance, have 3 people (this is sorta like the athene method)
Person 1 pulls the instance without hurting them, then leaves instance
Person 2(Death Knight) watches person 3 die, revives them as a ghoul, leaves group.
Person 3(Being run, turned into a ghoul) mauls the mobs.
Idea 2:Maybe you take a, say, level 30 into outlands, have the mob kill them, rez as a ghoul, leave group, and they can then solo the mob(s). (Outlands/Northrend, so it gives upwards of 1k exp.)
Any other ideas or testing this would be great! (I would test, but I can't right now.)