Someone suggested it to me a couple of pages back when I was farming Act 1
1. Select the The Imprisoned Angel - The Cursed Hold quest
2. Use waypoint to Northern Highlands and go to the left to see if the "The Watchtower" is there - If not, reload the game. This place can spawn a ton of elite packs in one level. Leave the place for now.
3. Go north to find Leoric's manor. Go inside and finish all the mobs (should not take very long).
4. Use the waypoint in Leoric's manor to go to the Festering Woods - There are 2 dungeon with an elite pack in each one, and 2 elite packs in the woods (very small area)
5. Go to the Cemetery of the Forsaken and clear the 3 crypts
6. Go back to The Watchtower and clear it
This path is awesome because it doesn't require you to explore large areas and it has just a ton of elites. If you can kill Act 1 mobs fast you can probably do it in an hour or less
You can also go the Halls of Agony Level 2 and do the Warden & Butcher
About your NV - It disappears because you changed one of your skills. It says so in the description
I was wondering why it was happening at first too lol
I don't really see how that makes sense BTW