Originally Posted by AlienaThis is a walkthrough for Hour of Twilight, one of the new heroics releasing in patch 4.3. Keep in mind that all the footage in this video was taken just after the dungeon's release on the PTR, and certain details about the encounters may still change in the future.
Hour of Twilight is an NPC-guided instance reminiscent of the dungeons released in late Wrath of the Lich King. You follow Thrall around through Dragonblight, fighting your way through gauntlets of trash and three bosses over the course of it. It's a quick, straightforward and easy instance, just don't forget to talk to Thrall whenever possible, as the instance won't progress if you leave him behind.
After first entering the instance and talking to Thrall, you go through a quick gauntlet of ice elementals before you face your first opponent, Arcurion. As soon as you engage him, minions will spawn on the ledges surrounding the canyon and throw boulders at random party members. Thrall will deal with the minions, and all your party has to do is move from impending boulders while killing the boss.
Occasionally, Arcurion will put chains of ice on all party members, which can be dispelled to allow them to keep moving out of boulders. A little while into the fight, Arcurion will entomb Thrall in an iceblock, which needs to be destroyed to keep the boulders at bay. At 30% health, Arcurion will start channeling Torrent of Frost, which deals 20k Frost Damage each second to every party member - quickly finish him off at this point, and if necessary, use defensive cooldowns to keep the damage at bay.
After defeating him, talk to Thrall to engage the next portion of the instance. He'll lead you to Galakrond's Rest, where you face another gauntlet of trash packs and your second opponent, Asira Dawnslayer. Thrall will put up totems throughout this part of the instance, and as many party members as possible should stand in them to receive a major health and damage buff.
Once you reach the end of the gauntlet, Asira Dawnslayer will appear on a dragon and force you into fighting her. Upon engaging her, Asira will put a debuff called Mark of Silence on all spellcasters in your group, including the healer. Everytime a debuffed party member casts a spell, Asira will throw a dagger their way and should it hit them, they'll be silenced for 2.5 seconds. The daggers can be interrupted by being positioned behind a tank or other melee character, should it be necessary to do so.
She'll also throw red smoke clouds on the ground around her that damage anyone who stands in them and makes anyone in them as well as herself untargetable, so your tank needs to pull her out of the clouds.
Thrall will help during the encounter by putting up the same totems he's been using in the preceding trash gauntlet, so whenever possible, your party members should stand in a totem range. When she's low on health, Asira will put up a Blade Barrier. To lift it, she needs to be hit by an attack that deals more than 30000 damage, so save a cooldown for this if your party has low damage output.
After defeating her, dragons will descend and take your party to Wyrmrest Temple once mounted. Talking to Thrall will initiate the last trash gauntlet in this instance. This gauntlet consists of a bunch of Faceless and Tentacles. Ranged party members should nuke down the Tentacles once they appear whereas melee should concentrate on the Faceless.
Once past the gauntlet and into the Temple, Archbishop Benedictus awaits. The bishop's gone a little powerhungry and is probably the most difficult encounter in this instance - if only for the number of different spells he'll throw at you. His first phase lasts from 100-60% of his health and in this stage he'll only use Holy Spells.
First, he'll debuff a random party member with Righteous Shear, which deals damage to anyone near the debuffed party member and is dispelable; so either dispel it off them or have them stand away from the rest of the group.
Occasionally, he'll summon orbs of light that will focus on a party member and then descend onto them, leaving a puddle of light on the ground that looks treacherously friendly but will dal 80k damage every couple seconds to anyone standing in it.
Lastly, he'll summon a wave of light that will go across the middle platform in a random direction. Standing in one of those will deal 100k damage and knock back, so don't stand in them. Thrall will help by dispelling party members, destroying a majority of the orbs in the air and summoning a water bubble that protects anyone in it from the wave of light.
At 60%, the Archbishop will transition to his shadow form and will continue to do the exact same abilities, except this time they all deal shadow damage and Thrall won't be able to assist with them. That means that the shadow orbs will actually focus three party members and leave three puddles on the ground that can't be stood in, and there'll be no water bubble to protect from the Shadow Wave - not that it was hard to avoid in the first place.
Once defeated, you've cleared the whole instance. Congratulations! You might even have gotten a really terribly ugly staff.