Just to help Blizzard out here so it will have to get fixed. This is the way you do it
Start a game and level a nec and other chars to level 9 so the necro can cast skellies
Then start a T6 game with a necro and the other chars (does not matter class)
necro goes down into brawling area then returns to town.
You will find that tyrael will then start attacking the necro skellies. Kill the skellies and watch the levels come. Repeat until 70. The easy part here is that the skellies don’t fight back so you can kill T6 monsters with no danger. I did not use this method to level… just spent a few minutes after reading this tread and figured it out. Tested in Act 1
End of Lesson