I know they fixed a version of this bug a long long time ago, but I stumbled upon this one and it works on Last WoW and not many exploits work there, so i figured I'd let you all in on it....
1. Need a lvl 20 Warlock (at least)
2. Either a Palli or a Mage
3. Have the Lock put a Soulstone on either one
4. Use WeH to fly into the air, high enough to where you know you will die for sure (use a place with flat ground)
5. Fall to your death and either use Divine Shield or Ice Block right as you hit the ground (timing is everything)
6. Now use your Soulstone to res, but make sure you do it within a couple seconds, because if the spell effect is gone it wont work
7. Buff yourself with anything, if the buff doesnt work you will be immune to everything, Now go tank Kil'Jaedon
8. Oh yea, after your bugged dont use WeH for anything (Server Speedhack Detection etc..), if you get logged out you'll have to re-bug