MOTHER

Fatboss

Single Phase encounter, Two Distinct Stages

Overview:

This fight consists of three chambers, separated by blue arcane barriers. If you pass through the barrier, you explode the raid, dealing 25k damage to all players. Also, if you’re moving into a chamber further down the hallway and closer to the final chamber, including entering the final chamber, you also spawn an add that must be tanked and killed. The arcane barriers act as a LoS prevention mechanic. The goal is to get MOTHER to the third chamber as slowly as you possibly can, as chamber 3 has a hard "enrage" mechanic timer. If you cannot kill the boss in the 3rd chamber within a certain amount of time, it insta-wipes the raid. However, in practice, this is very unlikely to happen.

If your raid has very good DPS, I recommend skipping the detailed explanation and using the cheese strat.

Stages 1 & 2

• Sanitizing Strike
  • Tank mechanic, you CAN simply avoid this mechanic by moving behind her when she casts it. If you get hit, deals a moderate amount of damage, plus a debuff making subsequent hits deal 50% more damage, stacking indefinitely.
• Purifying Flames
  • Red swirly under your feet. Explodes with a plume of flame after a few seconds. Take a guess what to do.
• Wind Tunnel
  • On a timer, wind comes into all of the chambers, pushing the raid towards one direction. There is a lava patch at the far side edges of each chamber. Don’t get blown into lava patch. The raid can stack in the doorway area right near the arcane barriers, and allow the wind to push you into the wall.
  • Winds alternate direction throughout the fight
• Uldir Defensive Beam
  • Once the boss is in chamber 2, lazer beams begin periodically passing through chambers 2 and 3 on a timer. They form a wall, with an open area. Just run through the open area, don't get hit by them.
• Uldir Defensive Beam, 2
  • Lazer beam drops from the ceiling, same idea as the ones from the side. Cover most of the area, with a safe zone
  • Safe zone is indicated by golden swirls on the ground
• IMPORTANT: Wind and Purifying Flames CAN overlap.
• Chamber Movement & Strat
  • We need to slowly move the raid through each barrier. Each chamber has an energy bar starting at 0, that ticks up 1 energy every 2 seconds. When the chamber hits 100% energy, it instantly kills everyone left in that chamber with fire.
  • The goal is to move everyone as late as we can, to prolong Stage 1 and Stage 2 time.
  • One add spawns for each person passing through the barrier, along with an AoE explosion dealing 25k to the entire raid
    • The add casts an ability called Clinging Corruption, does 17k to raid plus 15k/s for 5 seconds
    • Adds must be interrupted, can be stunned & knocked back.
  • The barrier acts as LoS. However, AoE effects can cleave to the adds through the barrier.
    • Ie: Ignite, Blizzard, etc.
  • First send a group of 3 - 1 tank, 2 AoE DPS with stuns first.
    • Then 1 dps 1 heal
    • Then alternate, 2 dps, 1 heal 1 dps, 2 dps, 1 heal 1 dps etc.
    • Last group through is the second tank, plus his assigned healer.
    • In larger groups, you may need to send groups of 3, that should only be 75k damage total to everyone.
    • This last group MUST move out before chamber energy hits 100. Boss follows, activating the next chamber
• Rinse and repeat. We need to cross 2 barriers following this strat.

^^ The circles represent roughly the areas that you can tank the boss on one side, and have AoE splash from the other side hit her, or vice versa with splash hitting adds. Not necessary at lower difficulties, and you DO need to adjust for the defensive lazers.

Stage 3 - Last Chamber

• Boss starts taking 100% Increased damage.
  • Lust immediately upon boss entering this chamber
• Purifying Flames continues in this stage
• Sanitizing Strike continues in this phase
• Winds continue in this phase
• Uldir Defensive Beams
  • Same as Chamber 2

Cheese Strat for Heroic

• Lust on pull
• Do not send first group for 20s
  • then send groups of 3 as normal
  • the boss should be brought through the barrier as either the 3rd to last, or 2nd to last group
  • DO NOT send anyone through the 2nd barrier into chamber 3
  • The boss should die in chamber 2

Mythic Changes

• 2 new types of adds spawn upon passing through the barrier
• Resistant Bacterium
  • Casts Bacterial Outbreak
    • Hits target for 36k damage, and also buffs all other adds to deal an additional 10% damage from all abilities
    • Does not appear to be interruptible. Kill ASAP
• Viral Contagion
  • Infects a player with a 20 second DoT, dealing 20k/sec
  • Can be dispelled
  • When dispelled, puts a DoT on all players within 10 yards, dealing 30k/sec for 10s
  • The player with the Contagion MUST move out of raid before being dispelled. Call out for the infected person to get out of the raid, and when they’re >15 yards, dispel
• Add Management
  • Which add spawns is based on what role the player is - Resistant Bacterium spawn upon a tank passing through, Viral Contagion spawns upon a healer passing through, blobs are spawned from DPS
  • Priority is Viral Contagion > Resistant Bacterium > Blobs
• Lazer Beams
  • Both set of lazers happen nearly simultaneously. The side-beams occur slightly before the ceiling beams. Stand in the one safe zone that's open for both the side lazers and roof lazers
  • It's extremely important for the tank holding the boss to ensure MOTHER is not facing the raid, as she always does her frontal cone during the ceiling lazer
• Send 4 ppl across first. 1 tank, 2 dps, 1 healer
  • At least one, if not both the first 2 dps across should have an AoE stun, and use them one after the other, blow CDs, and melt the first set of 4 adds.
    • About 5s after group 1 crosses, send the next 2 dps over as well, followed by the group 2 healer when the raid is stable
  • 3 ppl each after that
  • Boss last
  • Each time a Viral Contagion or Resistant bacterium spawns, use an AoE stun while you burn them to prevent or minimize the number of debuffs that go out
• Lust as soon as you enter chamber 3 with the boss.

Mythic Mode Tips

• There are essentially only three ways to wipe on this fight
  1. Too many people cross the barrier at once, blowing up the raid and killing people
  2. The Viral Contagion debuff gets off, and is dispelled while the player is still in the group, spreading it to everyone and killing them
  3. The blobs do not get interrupted
• Of these, #3 is by far the most frequent issue. While blobs are lowest on kill priority, they're #1 on interrupt priority. If a single cast is let through, you'll almost certainly lose people, and have a very high probability of wiping. If you manage to recover, you'll be behind on sending groups through, setting you back significantly
  • If 2 casts get through, it's essentially a guaranteed wipe.
• You need to have specific assignments for interrupts and AoE stuns. Havoc DH, any monks, warlocks, shamans etc with AoE stuns are extremely valuable, and these should be rotated
• Have one person from group 1 be assigned to mark 1 blob with skull, and have an assigned interrupter for the Skull blob and the non-skull blob.
• Expect this to take several pulls to get used to the stuns and interrupt rotations. Once you get it figured out, you'll be well on your way to killing this boss
• WARNING - as of this writing, the lazers are VERY buggy. When the side lazers spawn, they seem to deal damage about 10 yards away from the visual, potentially killing people instantly. Also, jumping during the ceiling lazer may kill you.