Win virtually every deepwind gorge BG, many powerful battleground exploits

Instructions:

1. Go to the entrance to the Goblin Mine. Die. 
2. Ghost run to your corpse, go back into the cave, rez,
3. You are not invulnerable behind a teleport field and the opposite faction cannot attack you.
4. Defend the mine with pet/minion etc and/or use warlock demonic circle to move in and out as you please. 

A skilled warlock with good gear can solo defend against any number of players.

(This and several other powerful exploits are in the following video)