I DO NOT KNOW IF THIS HAS BEEN REPOSTED
Ok, so in mount hyjal in jaina's side there are the 8 waves, and basically my guild doesnt know how it works but we did get THe lich down to 33% and in the 5-8 wave i basically found a Buff support that can help out rogues
The NPC's are called Shadowy Necromancer and when u MC them they give the buff called Unholy Frenzy - Spells - World of Warcraft)
Unholy Frenzy15 Mana 30 yd range
Instant cast
Increases an ally's attack speed by 100% for 20 sec., but also inflicts 500 Nature damage to that ally every 2 sec.
yes, this is what i found a week ago.