I know a lot of people already know that thorns aura only does a bit of damage but if your improved thorns in balance spec then it can really hurt.
I tried this on my lvl 11 when i was bored on halloween, my friend made a new character. A human pally, but other then that all i did was stay out of the group and put wild and thorns on her.
I went around and healed her while she aggroed the whole defias farming patch at the begining place. sence healing dosnt take XP from her and neither does the buffs they get all the XP.
But for someoen to get there person from 1-5 takes idk 15-25 minutes tops. But when we did it. She got all the loot and we got her to lvl 6 in 11 minutes. This also would work very well if the pally had improved ret and you where both higher level.
Im just putting the idea out there and it works fine.