Arcane Mage DPS Liberation of Undermine Raid Guide — The War Within (11.1.5)

• Activating Alter Time right as Exhaust Fumes goes out and then re-activating it near the end is a great way to avoid all of the damage and minimize healing required on you.
• Make sure to use Prismatic Barrier if you get targeted for Incendiary Fire.
• Otherwise simply rotate using your defensives during the bonus damage phase to minimize the healing you need.

• Use your cooldowns right at the start of the fight, but after that hold your cooldowns until each bonus damage phase. You can use 1 Touch of the Magi in-between each bonus damage phase.
• Make sure to channel Evocation a few second before each damage bonus phase begins to ensure you are not wasting time during the bonus damage phase on Evocation.

• Use Alter Time if you get Spew Oil, after which you can use Shimmer to drop the oil, and then re-activate Alter Time.
• Make sure to align yourself so that any Arcane Orbs (either manual or from Orb Barrage) will hit as many adds as possible.

Be sure to make use of the 'Export Talents' button to import the build directly into your game!

• While on the Flarendo side, you should rotate your cooldowns for each Scrapbomb. Ice Cold for one, Greater Invisibility for the second and Prismatic Barrier + Mirror Image for the third.

• Generally you can use your DPS cooldowns as they become available. However, keep an eye out of the boss energy bar. If it is close to full, you should hold your cooldowns a few seconds to align it with the intermission to get cleave damage out of your cooldowns. This will align pretty well naturally, only having to delay cooldowns a few seconds.

• This is a relatively straightforward boss from a mechanical standpoint. Make sure to use Shimmer aggressively to avoid losing uptime when dealing with the mechanics.

If your group requires it, you can spec out of Ice Cold to be able to solo soak Scrapbomb.

Be sure to make use of the 'Export Talents' button to import the build directly into your game!

• If targeted by Sound Cannon, make sure to use a defensive like Mirror Image + Prismatic Barrier.

• Use your main DPS cooldowns as they become available, unless the intermission is about to come up, then hold on to it for after the intermission. This should naturally occur if you are not holding your cooldowns for other reasons, but if you did hold your cooldowns for other reasons, make sure not to waste them in the intermission.
• Save your Arcane Orb cooldown for when the fireworks land down to quickly AoE them down.

• During the intermission, if you cannot make it to an Amplifier in time for the shockwave, or if you are doing other things (like channeling a different Amplifier), you can use Shimmer or Alter Time to safely make it through the shockwave. Shimmer can be used to simply go through it. If using Alter Time, you have to place down Alter Time and then move away from your Alter Time, and then re-activate it after the shockwave moved over your snapback position.

Be sure to make use of the 'Export Talents' button to import the build directly into your game!

• Use one of your defensives if targeted by Incinerator.
• There are no real hard hitting specific mechanics on this fight (assuming the mechanics are done properly) to activate specific defensives for, so I recommend simply rotating your defensives whenever the rot damage starts being high ( Toxic Fumes) or your healers are struggling.

• You will want to align your big cooldowns with when the adds are rolled into the boss and take bonus damage. When this happens depends on your strategy and how effective the players in the raid who are doing the garbage rolling are at the rolling. Generally, I recommend starting off with using Arcane Surge on cooldown, and as your guild gets into a more consistent pattern, slightly delay your cooldowns when it can align with the adds being dragged into the boss. You should not delay Arcane Surge and related cooldowns more than 10 seconds or so to achieve this.
• Arcane Orb can always be delayed for when the adds are up as holding onto it is a minimal damage loss on single target.
• Touch of the Magi should be used shortly before the adds are pulled into the boss to ensure that it explodes as the adds are on top of the boss.

• Make sure to use Counterspell on Scrap Rockets (from the Scrapmasters).

Be sure to make use of the 'Export Talents' button to import the build directly into your game!

• Rotate defensives on Unstable Explosions (the explosion after a Foot-Blaster is soaked). Generally a single minor defensive like Prismatic Barrier or Mirror Image will do, but if it overlaps with Sonic Ba-Boom, make sure to use either Greater Invisibility or Ice Cold.
• If you are soaking rockets from Rocket Barrage, make sure to always have up either Prismatic Barrier or some other defensive. It is not worth using Ice Cold on this unless you absolutely have to soak it and you are low health, as you should keep it for nasty overlaps of mechanics like described above.
• If you are soaking a Foot-Blaster, activate Alter Time right before moving out of the group to the one you will soak, but then after soaking it, do not immediately re-active it. Instead, wait a few seconds until the damage over time effect is (almost) gone before re-activating.

• Use everything on cooldown.

• To minimize damage loss, make sure to use Shimmer during Mega Magnetize to move away from the pull in.
• Activate Alter Time right before the boss reaches 100 energy and casts Beta Launch, then re-activate it immediately after the boss pulled you away.

Be sure to make use of the 'Export Talents' button to import the build directly into your game!

• Note that Alter Time does not heal you through the heal absorb of Foul Exhaust, but it does count as healing, so will lower the remaining absorb.
• For the Flame and Coin Token effect of Reward: Flame and Coin, make sure to cycle defensives. Greater Invisibility only lasts about half the effects, so use it after a few seconds and not right at the start. Ice Cold lasts the entire duration so is a great defensive to use for it.

• Use on cooldown. If the adds are about to spawn, you can delay a few seconds if needed, but generally you should use on cooldown and only delay a few seconds at most.

• Make sure to use Counterspell on the Overload! casts from the assistants.
• If the Shock and Coin Tokens are inserted and the boss casts Reward: Coin and Shock, you can activate Alter Time while far away from the pull in effect and then re-active it when you get close.

Be sure to make use of the 'Export Talents' button to import the build directly into your game!

• During phase 1, the Zee phase is generally higher damage taken, so try to save most of your defensives for this part of phase 1.
• You can soak multiple overlapping circles dropped by soaked mines by using either Ice Cold or Greater Invisibility.

• Timings vary greatly on this fight due to the different available strategies, where you can move to the different sides at multiple different timers, and depending on which side you start on. Try to align your Arcane Surge with the start of any Zee phases, so maximize cleave damage with the add that spawns at the start of it. Do not delay your cooldown more than 20 seconds or so to achieve this though.
• Make sure to hold your cooldowns so that they are available when the boss reaches 40% health. Activate Evocation as the boss is around 41% health so that it finishes as the boss goes into the intermission.

• If you get targeted by Frostshatter Spear, you can get into position through the slippery effect easily via Shimmer.
• You can soak the Zee phase mines effectively by activating Alter Time right before walking into them and then immediately re-activating it after hitting the mine. It will cancel the falling and heal you to full. You can then follow it up by a minor defensive like Prismatic Barrier and soak the fire circle it leaves behind, or a bigger defensive like Greater Invisibility and soak multiple overlapping circles.
• During the intermission, after the white arrow soak ( Storming Impact) the boss goes into its rotating mechanic ( Bulletstorm). During this, you can minimize movement by using Shimmer to move through the Bulletstorm. However, this can be a bit risky as the Bulletstorm is quite big, so a safer approach if you do not feel comfortable doing this, is to activate Alter Time, then Shimmer away alongside the way the boss is rotating, and then re-activate Alter Time after the Bulletstorm has passed your original Alter Time position.

Be sure to make use of the 'Export Talents' button to import the build directly into your game!

• You can activate Alter Time before Scatterblast Canisters and then immediately re-activate it after it went off. The Alter Time heal will not heal you through the heal absorb from Mechengineer's Canisters, but it will pretty much entirely get rid of the absorb so other healing will work on you almost immediately after the hit.
• Use Mirror Image right before the boss reaches 50% health so it will last the entire intermission.
• There are many high damage moments on the fight, and which ones you need to use cooldowns on heavily depends on how your group assigns healer cooldowns. However, it is important to keep at least some cooldowns for the intermission, and towards the end of phase 3.
• You can solo soak the phase 3 Tick-Tock Canisters with Ice Cold if needed. You can also survive it with smaller cooldowns, but if it overlaps with anything else you are at high risk of dying.

• Cooldown usage depends largely on your group's damage, as the boss goes into the intermission at 50%. You want to use your cooldowns on cooldown early on, but make sure you have Evocation + Arcane Surge ready for the intermission. Generally, this means your first 3 sets of Evocation into Arcane Surge should simply be on the pull and then on cooldown, and then your 4th set can be used during the intermission. However, keep an eye out on the boss health and if the boss is close to 50%, delay your cooldowns until 50%.
• Other than that, if possible, you can try to align your cooldowns with adds, but this will depend how fast they are grouped up, so generally I recommend just using them on cooldown and maybe delaying a few seconds if adds are about to spawn.

• If you are carrying a bomb to the coils, you can use Alter Time before using Shimmer, so you can re-activate Alter Time to get back in position and refund a Shimmer charge, since Shimmer charges are really valuable, especially in phase 3.
• There are a lot of things to dodge in this fight, but none of them require any special tricks to handle them properly. Make sure to make good use of the free mobility you get from Slipstream to move, so you can keep your Shimmers only when you really need them.

Be sure to make use of the 'Export Talents' button to import the build directly into your game!