The Glacial Abyss Watcher is one of the five "Watchers of the Netherrealm". You must defeat any combination of these Watchers 4 times to challenge the Traveler, one of the pinnacle bosses. The Watchers of the Netherrealm are harder than typical Beacon Bosses. The difficulty of the Watcher is based on which Timemark (1-8) you are attempting.
In order to fight the Glacial Abyss Watcher, you have to generate enough Stage Attention. The required amount varies based on your chosen Timemark Level, ranging from 4-10.
Watchers have specific loot tables. Chaos Invasion Card Inheritance does not affect the Watcher's fight or loot table in any way.
Rewards
All The Watchers of the Netherrealm have a pool of exclusive Legendries that can drop. Watchers can also award various currency, Memory Cards, and items from the global drop pool.
Guaranteed Drops
Cinder - Rewarded for defeating this boss for the first time in each Timemark, for Timemarks 1-7.
Two random Rank 5 Beacons used to access Timemark 8 Netherrealm - Timemark 7 and Timemark 8 only.
The Beginning - Timemark 7 only.
The End - Timemark 8 only.
Random Drops
Defeating The Glacial Abyss Watcher may reward any of the following:
Reforged Statue
Ralph's Engraving
Sky Devourer - Agile Armor
Arctic Ring
Glacier Caster Shield
Fallen Snow
Chaotic Ending - Timemark 7 and Timemark 8 only.
Helio Rock - Timemark 8 only.
A random Rank 5+ Beacon used to access Timemark 8's Deep Space mode - Timemark 8 only. This drops more commonly within higher Offset Degrees.
A rare Trinket base type from the table below - Timemark 8 only.
Trinket Base Types
God's Boon Belt
Graceful Ring
Surge Ring
Aurora Ring
Destroyer's Amulet
Onslaughter's Amulet
Sacrificer's Amulet
Shaman's Amulet
Cataclysm Amulet
A Precise Passive or Trigger skill from the table below - Timemark 7 rewards a level 16 copy and Timemark 8 rewards a level 21 copy.
Precise Passive/Trigger Skills
Precise: Acuteness Imbue
Precise: Auto Defense
Precise: Cast on Severe Injury
Precise: Cast When Taking Damage
Precise: Charged Flames
Precise: Corrosion Imbue
Precise: Curse on hit
Precise: Death Pact
Precise: Deep Pain
Precise: Electric Conversion
Precise: Elemental Amplification
Precise: Elemental Resistance
Precise: Energy Fortress
Precise: Erosion Enhancement
Precise: Fearless
Precise: Flame Imbue
Precise: Frigid Domain
Precise: Ice Imbue
Precise: Magical Source
Precise: Nimbleness
Precise: Precise Projectiles
Precise: Rejuvenation
Precise: Steadfast
Precise: Swiftness
Precise: Thunder Imbue
Precise: Weapon Amplification
Skills Breakdown
The Glacial Abyss Watcher can generate roaming Frost Orbs throughout the fight, these deal moderate damage over time in a small area. Frost orbs do not expire until the fight is over. Avoid taking damage by moving out of the Frost Orbs' Path.
The Glacial Abyss Watcher slams it's tail into the ice, dealing cataclysmic damage in an area in front of the Watcher. Do not be directly in front of the Watcher when this attack lands.
The Glacial Abyss Watcher slashes it's talons in a quick dash attack. This ability deals substantial damage in a large radius with only a small windup time. Avoid it by being behind the boss.
The Glacial Abyss Watcher executes a frontal cleave with mediocre damage. This ability is enhanced with added effects after the first Flight Phase.
The Glacial Abyss Watcher channels Frost Breath in a massive cone in front of them dealing moderate damage over time. This ability covers a large area in front of the Watcher, avoid damage by being behind or aside the watcher.
At 75%, 50% and 25% HP remaining, the Watcher flies into the air and creates 3 gigantic Ice Waves that deal cataclysmic damage over time on contact. Ice Waves are formed at random edges of the arena that quickly travel to the location you were in when they formed. Avoid this by staying in the center of the arena to give yourself time to evade the encroaching Ice Waves. Have a mobility skill ready to help dodge the Waves.
The Glacial Abyss Watcher executes a frontal cleave with mediocre damage. This ability generates several Ice Waves in front of the Watcher that deal medium contact damage, they attempt to track you with a poor turning radius and have a limited lifetime. Avoid the cleave and the Ice Waves by standing behind the Watcher.
This enhanced ability can be used by the Watcher after the first Flight Phase.
The Glacial Abyss Watcher executes a frontal cleave with mediocre damage. This ability scatters lingering Ice Mines that explode after a short delay when stepped on, dealing poor damage in a small area. Avoid the cleave by standing behind the Watcher, and feel free to intentionally detonate Ice Mines to prevent them from becoming a problem later.
This enhanced ability can be used by the Watcher after the first Flight Phase.
The Glacial Abyss Watcher winds up it's spiked tail before swiftly slashing a large radius around it, dealing mediocre damage. This is one of few abilities that cannot be avoided by simply standing behind the watcher, the only way to avoid damage is to run away. This ability is enhanced with added effects after the first Flight Phase.
The Glacial Abyss Watcher winds up it's spiked tail for a longer period of time before swiftly slashing a large radius around it, dealing mediocre damage. This ability creates 3 Ice Waves that spiral away from the Watcher and then back to it, dealing moderate damage on contact. Avoid taking damage by running away from the Watcher while paying mind to the Ice Waves' predictable path.
This enhanced ability can be used by the Watcher after the first Flight Phase.
The Glacial Abyss Watcher winds up it's spiked tail for a longer period of time before swiftly slashing a large radius around it, dealing mediocre damage. This ability scatters lingering Ice Mines that explode after a short delay when stepped on, dealing poor damage in a small area. Avoid taking damage by running away from the Watcher, and feel free to intentionally detonate Ice Mines to prevent them from becoming a problem later.
This enhanced ability can be used by the Watcher after the first Flight Phase.
The Glacial Abyss Watcher thrusts it's tail into the ice below, dealing notable damage in a small area. This ability generates two Ice Waves that deal moderate contact damage as they travel forwards. Avoid taking damage by standing a distance behind the Watcher.
Glacial Abyss Watcher Mechanics
The Glacial Abyss Watcher begins the encounter in the sky, monologuing you. After a few moments, Frost Orbs are dropped near the center of the Arena. Shortly after, the Watcher lands at a random point in the Arena's outskirts and the fight begins. Many of the Glacial Watcher's attacks can be avoided by simply standing behind it, with Spin Attack and it's enhanced variants being the exception.
The Glacial Abyss Watcher randomly rotates through all of it's abilities while directly engaging you. The enhanced Cleave and Spin Attack abilities replace the standard form after the first transitional Flight Phase. All of this Watcher's abilities deal Cold damage, having maxed out Cold resistance is recommended.
Flight Phase
At 75%, 50% and 25% HP remaining, the Watcher flies into the air and creates 3 gigantic Ice Waves that deal cataclysmic damage over time on contact. Ice Waves are formed at random edges of the arena that quickly travel to the location you were in when they formed. Avoid this by staying in the center of the arena to give yourself time to evade the encroaching Ice Waves. Have a mobility skill ready to help dodge the Waves.
Note: Flight Phase can be bypassed with very high DPS, leading to a very quick fight.
Video Guide
Summary
Complete Netherrealm stages to gain enough stage attention to fight The Glacial Abyss Watcher.
The Watchers of the Netherrealm have a pool of exclusive Legendries that they can drop.
Having maxed Cold Resistance is highly recommended.
The Glacial Abyss Watcher has 2 key phases. Dodge its basic patterns during the Boss Phase, and avoid the Ice Waves during the flight phase.