I am wondering if anyone has tried using a warrior to tank and 4 shadow priests all using vampiric embrace and touch as dps and healing, and how well it worked.

4 priests all with vampric embrace up on would be the equivilent of one of the priests healing the main tank (not to mention everyone else) at 100% of the damage he is causing.

With all 4 priests addionally having vamperic touch up, seems like that would be enough additional mana to keep them all going until the fight is up. Crowd control could be a problem though, maybe some mind control? Anyone tried this and can tell me your experiences?