Cache of Madness The Cache of Madness event occurs when a player with a high skill of inspects several ancient artifacts and activates them which summons 1 of 4 random bosses . The necessary skill in Archaeology is merely 225 , or above . The four bosses are Hazza ' rah , Renataki , Gri ' lek , and Wushoolay . Each boss will drop one of two specific pieces of loot , and one of four shared pieces , meaning that this event will drop two 353 epics and a Mysterious Gurubashi Bijou for those on the quest . Hazza ' rah : Balance Druid . Strategy . Hazza ' rah does two things to watch out for : He will constantly cast a " very " powerful Wrath - this must be interrupted as often as possible , because they hit for 40 - 60k , or more , on tanks . If it ' s not interrupted , Hazza ' rah will just spam - cast it . Periodically , Hazza ' rah will also cast Nightmare , which will crowd control all but one party member . Four Nightmare creatures will appear , and each will target a different player . They have low HP , and must be killed to release their target from CC . If all four are killed , it will not stop Hazza ' rah from channeling Nightmare ; on the other hand , if none are killed , it will not " keep " Hazza ' rah channeling Nightmare past its duration . If a Nightmare reaches its target , that player will die . Renataki : Rogue . Strategy . Renataki is mostly a tank and spank ( more so than the others ) ; however , he " does " have two notable abilities . He will periodically cast Shadowstep and then Ambush on a single player at random . After Ambushing , Renataki taunts the party , laughing as he does so . While taunting , he will be too busy laughing to attack . He will also use Thousand Blades , and change fixates from target to target , dashing around the area . Thousand Blades will deal AoE damage to the entire party , and ( possibly ) deal higher damage to players that are near him during the channel . While unconfirmed , if it is in fact true that it does more damage to nearer players , then it ' s best to have the party split up and spread out during Thousand Blades to reduce incoming damage . Gri ' lek : Berserker . Strategy . A typical berserker , Gri ' lek will Fixate a specific target from time to time , grow in size , and begin to chase that player down . If the player gets hit , they will take massive damage , so they must flee from Gri ' lek until his chase ends . While Fixated , Gri ' lek will cast at least one Entangling Roots on his target , which is a magic snare . The healer must be ready to cleanse this . Wushoolay : Elemental Shaman . Strategy . Wushoolay is very fond of electrical attacks . He has four such abilities at his disposal . Forked Lightning will damage enemies in a cone in front of the caster ; the tank should keep him faced away from the rest of the party . He will summon Lightning Clouds periodically , which rain down lightning ( obviously ) over an area . Make sure you ' re not standing under them . The biggest concern is when he casts Lightning Rush , and charges a player picked at random . The party should split up and spread out when they see Rush begin casting , because of . . . Lightning Rod , which will come right after Lightning Rush . Wushoolay will walk slowly back to where he started the Rush at , taking three seconds to cast Lightning Rod as he does so . At the end of his cast , he will inflict 180 , 000 - 220 , 000 damage to any nearby players , knocking them back if they somehow manage to survive . The safest thing for players to do is to run away from everything : from where they had been standing , from Wushoolay , and from the other players .