Basically what you can do with this is kill low level players on a PvE server of the opposite faction.
Step 1 Find player of opposite faction in an area where there are mobs that are undead
Step 2 When the player has a mob targeted cast control undead while being flagged PvP
Step 3 They will get flagged for attacking your minion, kill them.
One area that i have been hanging around is Andorhal in Western Plaugelands
Edit: Should have said this to start but when you use Control Undead the mob stays the same level, not giving a clear cut reason for the lowbie to attack it.