Originally Posted by AlienaThis is a walkthrough to Well of Eternity, one of the new heroics going live with patch 4.3. Keep in mind that the footage in this video was taken just shortly after release of the instance, and certain details about the encounters as well as difficulty might still be adjusted in the future.
Well of Eternity is an NPC-led, dynamic instance delving into the history of the night elves. During this instance, every party member will be transformed into a Night Elf, and you meet up with Illidan and Malfurion Stormrage as well as Queen Azshara.
As you enter the instance, you're faced with one large demon that must be defeated before you stumble upon Illidan. Upon talking to him, he'll give your entire party a stealth buff and lead you through a courtyard full of demons. Just follow him and wait for a break in the demons before crossing the courtyard. Your objective here is to destroy three sets of crystals, each of them accompanied by a trash pack of demons.
Follow Illidan to get this task done, and once you destroy all three crystals, the first boss will spawn in the middle of the demon courtyard. Peroth'arn is a very simple, two-phase encounter - in the first phase you simply need to avoid the felfire circles he'll spawn under random party members. Once he hits 60% health he'll hit a transition phase in which he'll deal AoE damage to every party member - but don't panic, you have time to heal this back up.
Peroth'arn will go invisible after his transition and spawn a bunch of eyes. You're supposed to use the pillars of the courtyard to hide behind so the eyes won't see you, and after 40 seconds Perotha'rn will re-appear and be significantly weakened. However, don't expect that to happen if you're pugging this instance shortly after release. It's more likely that someone will get seen by an eye and trigger Perotha'rn to instantly re-appear, stun the seen player and give himself a temporary attack speed buff.
Still, he doesn't hit very hard so unless he receives a significant buff, this mechanic shouldn't make or break your party. At 25% health, he'll enter an enraged state but should quickly be burned down.
Ater his demise, Illidan will take a temporary leave. Head up the stairs and prepare to fight a few trash packs. The eyes in this area of the instance do a fairly significant chain fel-lightning type of ability, so make sure to stay spread out and focus them down quickly. The Highmistresses will make two copies of a random player that need to be killed. Once at the top of the stairway, you'll find Queen Azshara surrounded by 6 magi.
Once you engage the encounter, two of the magi will become active and need to be killed. After a certain amount of time elapses or after one of them dies, two more will become active, so try to kill the active ones simultaneously. The magi come in all three mage specs and will use abilities depending on their school of magic. The only really important things to look out for are the Frost Magis' Coldflame, which looks like blue fire on the ground and can't be stood in, and the arcane magis' arcane bomb. The animation for this one is really obvious, so don't stand in that either.
There are a lot of AoE abilities going out, so try to stay spread out to lessen the likelihood of having more than one person get hit by the magis' spells. A few times during the encounter, Azshara will start casting an 8-second spell called Total Obedience. Should she succeed, every party member will be mind controlled for 20 seconds, so make sure to interrupt it. There'll be a gigantic emote going across your screen, so it's pretty hard to miss.
When all 6 magi are defeated, the encounter is won and there'll be a fairly lengthy RP scene leading you into the center of the Well of Eternity, where you'll be re-united with Illidan, Malfurion and Tyrande. A short gauntlet of trash will follow - for the first pack, stand in Tyrande's moonwell and for the big demon take advantage of Illidan's buff by standing near him. After a pack of bats that you need to use AoE spells on, you'll engage the last encounter in this instance - Mannoroth and Varo'then.
Illidan will handle Mannoroth at first while Tyrande takes care of the portal spawns, leaving your party to deal with Varo'then. Throughout the encounter, Mannoroth will use Fel Firestorm - simply keeping your entire party moving during this seems to be the best way of dealing with it. You could also huddle up near Illidan to reduce fire damage taken, but tons of stacking Felfire will still do quite some damage. Varo'then himself doesn't really have any outstanding abilities.
When Varo'then is near death, Dreadlord Debilitators will spawn and prevent Tyrande from taking out the demons, so have your DPS stand in the moonwell she puts up and help her out by killing the Debilitators and any leftover demons. Once the Debilitators are dead, she'll resume her position and your party is free to help Illidan on Mannoroth.
Pick up the sword that Varo'then dropped when he died and throw it at Mannoroth to weaken him, which will cause him to regularly emit Felfire, so have party member huddle up near Illidan to counter the damage. Mannoroth will open up a demon portal and a constant stream of demons will pour out of it, but Tyrande should manage to deal with them while your party should continue to stay near Illidan and concentrate on killing Mannoroth.
Eventually, Tyrande will collapse and Illidan will give himself and anyone near him a crazy buff that should finish the fight within seconds. An RP scene follows and you have finished Well of Eternity. Congratulations!