Purj
boomer shaman
I think it's fine if people use it. Only think I hate is how hard it is for an alliance player to get the buff.
Alliance has no access to this buff. Its a horde-only crutch.
That being said - most people who use it are not good players. Usually you can catch them out of position within the first 3 min and kill them. A lot of times they AFK out to preserve the buff, but thats just as gratifying.