Hello there !
So first of all you will likely need a PALADIN for the leveling , at around level 60-70 for the best outcome . I did this with a level 70 protection paladin .
For leveling somebody the best would be a paladin but any class will do .
Warning !
If your friend does not have an AOE , then use BOMBS !
Step 1) Be sure to spec on Guardians Favor , protection talent which will reduce the cooldown of Hand of Protection with which you can make those 12 levels faster .
Step 2) After you did that both of you have to go to Azshara ( X marks the spot )
Step 3) Search for a small camp at exactly 59.5 , 31.3 . And locate the crystal that is shown bellow !
Step 4) Right-click the crystal and you will notice that 3 mobs are spawned , level 51 , and sometimes a level 55 ( Magus Rimtori ) . Keep clicking till you want since you can spawn over 500 mobs or as much as you like . I once spawned over 700 , at 1000 the server crashed . Peaple with low performance computer's will experiance very low framerate above 100 mobs !
Step 5) Be sure you are in a PARTY with your friend at the beginning . If your friend is a Paladin that may not be necessary.
Step 6) If your friend is not a paladin quickly cast Hand of Protection on your friend and DISBAND the group quickly !
Some players may already know that I am talking about the common powerleveling technique which has been known for quite a while .
Step 7) Tell your friend to use his AOE , if he dosnt have one be sure to have some BOMBS ( Anything between level 45 and up will work , a good bomb would be http://www.wowhead.com/?item=10562 )
Step After damage has been done to the mobs quickly use your Consecration if you are a Paladin , otherwise you may experiment with other classes , a Shaman would also be good ( Haven't tryed it with anything else so experiment , post the way you did it so others can learn new ways ! )
Step 9) Now it all boils down how good a tanker you are . My protection paladin barely got hit from the hundreds of bloodelves that were hitting him .
Step 10) Wait for your Hand of Protection to cool down and ENJOY !
P.S. this works on Mangos latest rev . Haven't checked Ascent so report back on that . Enjoy while you can . :wave: