Battle for Mount Hyjal Battle for Mount Hyjal is the 25 man raid instance in the Caverns of Time . Its difficulty is slightly below that of Black Temple , and the first two Tier 6 set tokens can be won here . Defeating enemies in Hyjal Summit yields reputation with The Scale of the Sands . Attunement . Mount Hyjal does not require attunement . Prior to Patch 2 . 4 completion of was needed in order to enter the instance . The quest is still in the game , the only substantial reward being the Band of Eternity set of rings . Prior to patch 3 . 0 . 2 completion of the quest chain also rewarded the " Hand of A ' dal " , which now is no longer available . Overview . Behind the MH instance portal is an anteroom which sports another three instance portals ( two of them blocked at start ) , a reagent vendor and the Tier 6 item vendor ( who can also repair ) . The three portals lead to the three bases ( Alliance , Horde , and Night Elf ) . The bases are also connected to each other by a long road within the instance itself . After defeating the two bosses in the Alliance camp , the second portal opens up and permits direct access to the Horde camp . After killing two more bosses there , the third gate opens , which leads to the Night Elf camp . Wipe recovery is usually possible in place , so the portals are used rather infrequently , save the last one - due to his long aggro range , wipes at Archimonde usually require a corpse run . The first four bosses are preceded by eight waves of trash mobs each . During these events , two counters appear in the UI : one displays the number of remaining mobs in the current wave , and a second for the current wave number . The fifth boss is not preceded by trash waves . The fights take place close to the entrance inside the friendly bases ( so that the NPCs can be used in an easy but controllable way ) . The waves ( and bosses ) spawn at the enemy camp outside the friendly base . Moving from there to the players takes about 20 seconds , so that drinking and rezzing usually can take place between waves . Talking to the Base Leaders . The first four boss events are each started by talking to the current base leader ( Jaina Proudmoore or Thrall ) . Just clicking on the NPC suffices — it ' s not possible to abort the event after starting the conversation . After the second boss in each camp is defeated , talking a third time to the base leader activates the next base , spawns Ancient Crystal Mines ( where epic gems can be mined ) on the path to the next base , and causes the current base to be destroyed by unstoppable waves of trash mobs . It ' s a good idea to first distribute the loot from the second boss , then move the raid to the next base , place miners along the road , and have only one player talk to the base leader and quickly follow the others . Dungeon Denizens . Trash Waves . The trash mob waves spawn every 2 minutes , or after the last mob of the preceding wave is dead ( if it ' s killed in less than two minutes ) . As good AoE tanking is required on many of the waves , a paladin tank is highly useful . On most trash waves , it ' s a good idea to set up an AoE kill zone ( particularly recommended for Ghouls ) . Some of the incoming mobs can be kite d by hunters to be killed by the NPC s ( e . g . the Banshee s ) . Melee players can attack the airborn Frost Wyrms by standing within their hit box directly underneath , but Gargoyles must either be silenced while casting a gargoyle strike or kited by ranged DPS until they descend to the ground , where they can be reached by melee . Make good use of the NPCs , as they can add significantly to the overall raid DPS . Wave Composition . The following table shows the individual wave compositions . Note that during waves 2 and 4 before Kaz ' rogal , the gargoyles spawn towards the back of the Horde camp and must be dragged to the front by ranged DPS . Tips on Bosses . The following tips apply to all bosses in Mount Hyjal : Loot . See Battle for Mount Hyjal loot Infinite Dragonflight . Oddly enough , although the quest NPCs involved in getting attuned for the Caverns of Time mention that the Battle of Mount Hyjal is a timeway that is being deeply disrupted by the Infinite Dragonflight , who are working tirelessly to keep it a secret from the Bronze dragons , there is not a single infinite dragonflight member in the instance ; unlike the other three Caverns of Time instances .