Boss Strat

Introduction
XT-002 Deconstructor is the overgrown toy robot who "guards" the Scrapyard of Ulduar. A toy of Mimiron the Watcher, XT also has many toys of his own.

XT is the final boss in the Siege Area of Ulduar, and beyond him lies the entrance to the city proper. The fight takes place throughout the entire area of the Scrapyard with XT and all of his "toy robot" adds.

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XT-002 Abilities
- Gravity Bomb: Charges the target with dark energy (the gravity well), causing them to explode and pull in nearby allies after 9 sec. This sucks people in, so stay away from others! It creates Gravity Well on the player: Pulls enemies within 10 yards into a gravity well, dealing 19000 to 21000 damage.

- Tympanic Tantrum: Deals 10% damage every 1 sec for 12 sec. Nearby enemies are also dazed for the duration. (like Doomwalker's earthquake.) Cast once every minute.

- Light Bomb: Charges the target with divine energy, causing them to sear nearby allies for 9 sec. Targetted attack, does 2k-3k damage on nearby allies.
(XT-002 will no longer cast Light Bombs or Gravity Bombs while channeling Tympanic Tantrum.)

Adds
Adds only appear when his Heart is exposed, which is every 25%.

They spawn in the corners, similar to Noth's spawn or Vashj's adds. They can and will spawn from all four corners.

Types of Adds
(1) XM-024 Pummeler, just melee. Arcing Smash (~2k), Trample and Uppercut, melee for 1.5k-2k on plate. Minimal dps. High HP.

(2) XE-321 Boombot, bombs the raid. Explode with a 12k-13k hit, which includes other mobs. Low HP.

(3)XS-013 Scrapbot, which merge into him if they reach him ("XT-002 Deconstructor consumes a scrap bot to repair himself!"). Extremely low HP.

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Exposing his Heart
XT-002 Deconstructor yells: So tired. I will rest for just a moment!

XT-002 Deconstructor's heart is exposed and leaking energy

Exposed Heart: XT-002 Deconstructor's heart is exposed. Increases damage taken by 100%.

The heart is exposed for 30 seconds at the beginning of XT's add phase. Killing the heart activates hard mode. Damaging the heart but not killing it will damage XT002 when he returns to battle.

Hard mode
To activate hard mode, kill his heart, which gives him the "debuff":

Heartbreak: The heart of the XT-002 Deconstructor has been severed, removing the combat limitations of the XT-002 Deconstructor. Damage increased by 25%. Health increased by 40%.

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The Fight
Assemble your raid near the middle of the room: XT won't aggro, and you don't want to run in far to reach him. MD your tank and engage.

Phase One: XT
There are two strategy choices: Spread out or clump up.

Either way your goal is the same: minimize the number of people hit by Light Bomb (5 yard radius) while not dying to Tympanic Tantrum.

And never hit anyone with Gravity Bomb.

Spread out
This is simple: spread at least 5 yards out and you won't need to worry about moving when you get Light Bomb. 10 yards will get you Gravity Bomb.

Your healers will need to be able to top off everyone during Tympanic Tantrum however, without the benefit of AE spells. Since this does 120% of the raid's health and people may be low from other damage, heals need to be fast and consistent.

This strategy has the advantage that there is far less raid movement, meaning heals and DPS can be more consistent.

Clump up
Two ranged clumps to his back left and back right, melee behind him.

When you get a bomb, you move out. Ranged move back if they can so they don't crowd the melee.

The danger of this strategy, however, is that while group heals are more effective, more people take damage (since Light Bomb starts ticking immediately) and Light Bomb during Tympanic Tantrum is very dangerous since Tympanic Tantrum snares you.

Holy priests with the +60% run speed talent on Power Word: Shield, Body and Soul, are excellent for this fight: don't bother shielding people with Gravity Bomb, since they have a full nine seconds to move. The danger lies with Light Bomb, where a speed boost is most welcome.

Spreading out may be a better strategy on the whole

Phase 2: The Heart and Adds
Every 25% he will switch to Phase 2.

When the heart is exposed, start DPS'ing it -- don't kill it, however, since that activates the hard mode. All damage done to the heart is increased by 100%, however, and when he ends Phase 2 his health drops by as much damage as you did to his heart.

The Pummelers need to be tanked immediately.

The Bomb Bots will do damage to friendlies and enemies when they explode.

The Scrap Bots must be AE'd before they get close enough to XT-002 to heal him.

If you're having problems reaching the enrage timer, don't DPS the Pummelers: bring them to exploding bomb bots, and then just keep them near the boss so they pick up incidental AE (although be careful of their frontal AE, don't wipe out the melee.)

After all the adds from an exposure phase are dead, players should return to DPSing XT. If your DPS is good, you should have done around 10-20% extra damage to XT during the Exposure Phase (via damage to his Heart) and will only have 5-15% more to go before he hits 50%, which will begin a second Exposure Phase anew. Simply repeat the above process three times and XT should die easily.

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