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Monster ouroboros large

This is a feature of Land of Mist following the defeat of monsters resulting from a HARD Explore. Once the land has been cleared of its defending monsters, there is a normal 24h collect period. At the end of the 24h, the land will either convert to the normal 48h protected mode OR generate the legendary mine monster Ouroboros

You have 168 hours to complete the battle before it flees.

Basic information[]

Monster Details
Name Type Divine Breakpoint Time to kill 5% Health (Conquest)
Ouroboros Mist Boss 0 ~4,000 168 hours 125,000,000

Target Areas
Target Health Physical Fire Earth Wind Water Note
Ouroboros 2,500,000,000 100 0 0 -50 0

Monster Loot
1 Epic 2 Epics 3 Epics Legendary Gold Medal
1%+ 24,790,000 38,150,000 82,170,000 138,550,000
99%+ 42,680,000 73,840,000 144,070,000 227,450,000 -
Source: Castle Age Monsters Damage/Loot Spreadsheet

Use this text string to post DMG needed in monster chat:

  • 1 Epic 42.7M, 2 Epic 73.9M, 3 Epic 144.1M, Legendary 227.5M
  • 5% 125.0M; 10% 250.0M; 15% 375.0M
  • Gold N/A

Participants: only guild members may participate in the battle, with the following distribution:

  • 100 people levels 500+
  • 40 people levels 150-499
  • 20 people levels 100-149

This battle uses the Monster Stance and Piercing/Resistance systems.

Additional Information[]

Stance Combat System[]

See the Monster Stance page for more info.

You can see your stance in the "General Alliance" tab; it is your main general's level + the levels of its allied generals that share his/her type (aggresive, balanced or defensive).

A) Your stance matches or is higher than the monster's stance:
- Each action gives you Contribution Points: displayed below your damage, they allow you to be eligible for prizes.
- With an aggresive alliance, your actions will raise the "Damage bar", giving a bonus to damage.
- With a defensive alliance, your actions will raise the "Critical bar", increasing chances of getting a critical.
- With a balanced alliance, your actions will lower the "Decay rate", the speed at which previous bonuses vanish (their bars empty)

B) Your stance is lower than the monster's stance:
- You don't get Contribution Points.
- You don't fill any of the bars above (Damage, Critical, Decay)
Ouroboros' stance difficulty rating is 30.

Level Point Range Damage Boost Critical Boost
0 0-250 0% 0%
1 0-500 10% 2%
2 0-1,000 20% 4%
3 0-2,000 30% 6%
MAX 0-9,999,999 50% 8%

Critical boost for Levels 2-MAX not verified.
Decay starts at -5.0 per second, and decreases with successful attacks with a balanced general.

Ultimate Mode:
Get both the damage and critical bars to max level to unlock ultimate attack mode. When ultimate attack mode is activated, players have a limited time to take advantage of vastly increased damage and critical chance before both bars reset to their starting values.
Players have 2 minutes to attack with +100% damage, and +10% critical chance.


Ouroboros has Piercing Resistances, and Wind Weaknesses.

  • Main Body: -50 Wind Resistance (Maximum bonus 5%), +100 Piercing Resistance (Maximum block 10%)*

*Tested with 75 Physical Piercing: 2.5% damage reduction. Meaning that 25 Physical Resistance blocked 2.5% of the damage.

Siege Weapons[]

While fighting Ouroboros, there are 5 siege weapons that can be launched to deal extra damage.
All Siege Weapons hit Ouroboros and are unaffected by blocks and resistances.
*Ouroboros has 2,500,000,000 HP

Name Clicks Damage Dealt

%HP Dealt*

Valerian Soldiers Valerian Soldiers 10 64,000,000 dmg
6,400,000 dmg/click
2.56 %
0.26 % per click
Elven Rangers Elven Rangers 20 80,000,000 dmg
4,000,000 dmg/click
3.2 %
0.16 % per click
Dwarven Militia Dwarven Militia 30 96,000,000 dmg
3,200,000 dmg/click
3.84 %
0.13 % per click
Archer Allies Archer Allies 40 112,000,000 dmg
2,800,000 dmg/click
4.48 %
0.11 % per click
Gray Wizards Gray Wizards 50 128,000,000 dmg
2,560,000 dmg/click
5.12 %
0.1 % per click
Totals 150 480,000,000 dmg
3,200,000 dmg/click
19.2 %
0.13 % per click

Every weapon needs confirmation.


Click to display 

Ouroboros Slain[]

The Desert Wastes are home to many monsters where they lurk and multiply unchecked by heroes. One such monster is Ouroboros, once an ordinary snake until it attacked an unfortunate wizard crossing the desert. The dying wizard cursed the serpent to an eternity of endless agony and the fell magics transformed the snake into the monster Ouroboros. Unable to die, the snake wandered the wastes devouring all it came across and slowly growing in size and power.

Over the centuries, its mind grew along with its body and it developed a intelect twisted by the constant pain. It learned to hate and despise wizards because of the curse and made a special point of hunting them whenever they ventured into the wastes. Eventually, travelers learned to avoid the wastes and the number of wizards venturing through them dwindled to nothing. Rumors grew of a unknown horror that lurked within the wastes and even the most stalwart travelers found alternate paths.

With no more wizards to devour, Ourobros has ventured out of the wastes seeking more wizards to vent its rage upon. Though you are tempted to let it eat some of the finger wagglers to teach the rest an important lesson about overly dramatic death curses, you feel like you should kill the overgrown snake before it starts eating everyone.

Gathering your allies, including a group of nervous wizards, you head out to stop the serpent's rampage. It is easy to follow the track of the serpent by the trail of destroyed mage towers and ruined academies. Eventually you come across the worm near an abandoned mine and lay a cunning trap. Ordering the protesting mages to the mine entrance, you hide the rest of your army nearby. It does't take long before Ouroboros take the bait and moves to the old mine.

As it moves to devour the mages, the rogues and warriors strike from the flank while your mages and clerics attempt to magically bind it in place. The battle appears to be going well until the magics holding the serpent at bay suddenly fail. It seems that it has acquired a resistance to magic after its years of devouring wizards. With no time to spare, you interpose yourself between the creature and the now panicking wizards. While it is focused on the tasty, panicking, treats behind you, you ram your sword straight into its belly dealing its deathblow.

With Ouroboros dead, the grateful wizards promise to enchant the abandoned mine to ensure a rich yield. You accept reasoning that at least this will keep them occupied and not making ill-conceived uncontrollable abominations or whatever it is that wizards do in their free time.

Rewards while fighting Ouroborus[]

Attack Essence 108 Attack Essence

Rewards after slaying Ouroborus[]

Rare Drops Epic Drops Legendary Drops
Shield of Endless Cycles Shield of Endless Cycles Off-Hand: Attack:30 Defense:70
Item Bonus: +25 Earth Pierce, -10 Water Resistance, +50 Physical Pierce

Helm of the Sorcerer-King Helm of the Sorcerer-King Helmet: Attack:100 Defense:90
Item Bonus: 2 Slots, +15 Earth Pierce, -5 Water Resistance, +50 Physical Pierce
Sandworm Gloves Sandworm Gloves Gloves: Attack:60 Defense:40
Item Bonus: 2 Slots, +15 Earth Pierce, -5 Water Resistance, +25 Physical Pierce.
Wormhide Breastplate Wormhide Breastplate Armor: Attack:60 Defense:125
Item Bonus: 1 slots, +25 Earth Pierce,
-10 Water Resistance, +75 Physical Pierce

Mark of Paxadrian Mark of Paxadrian Amulet: Attack:80 Defense:70
Item Bonus: +25 Earth Pierce, -10 Water Resistance
Spirit Ouroboros Spirit of Ouroboros Magic: Attack:55 Defense:55
Item Bonus: +10 Earth Pierce, -5 Water Resistance, +5 Physical Pierce

Green Wurm Skin Green Wurm Skin

Blue Wurm Skin Blue Wurm Skin

Brown Wurm Skin Brown Wurm Skin

Blue Wurm Eye Blue Wurm Eye

Green Wurm Eye Green Wurm Eye

Fang Trident Fang Trident Weapon: Attack:125 Defense:70
Item Bonus: 2 Slots, +50 Physical Pierce, +15 Earth Pierce, -25 Wind Resistance

Loot thresholds for 99%:

  • Rare: 1 > 19,000,000 (starts at 9.5M), 2 - 47,200,000 (starts at 14.2M), 3 - 85,340,000 (starts at 16.1M), 4 - 114,900,000 for 50% (starts at 19.7M)
  • Epic: 1 - 42,680,000 (starts at 24,790,000), 2 - 73,840,000 (starts at 38,150,000), 3 - 144,070,000 (starts at 82,170,000).
    • You must deal the damage above AND at least 14.9M CP (contribution points)
  • Legendary: 1 - 227,450,000 (starts at 138.6M).
    • You must deal the damage above AND at least 98.3M CP (contribution points)


Maw of the Void Elandal Crushers
Fang Glaive Fang Glave (Weapon: 125 Attack, 100 Defense, 2 slots, +35 Physical Pierce, +35 Earth Pierce, -25 Wind Resistance). Needs: Elandal Stompers Elandal Stompers (Boots: 15 Attack, 15 Defense, +15 Physical Pierce, +25 Earth Pierce, -5 Wind Resistance). Needs:
Envenomed Glaive Envenomed Glave (Weapon: 125 Attack, 125 Defense, 2 slots, +100 Physical Pierce, +55 Earth Pierce, -25 Wind Resistance). Needs: Elandal Greaves Elandal Greaves (Boots: 20 Attack, 20 Defense, 1 slot, +15 Physical Pierce, +25 Earth Pierce, -5 Wind Resistance). Needs:
Maw of the Void Maw of the Void (Weapon: 150 Attack, 125 Defense, 3 slots, +125 Physical Pierce, +80 Earth Pierce, -35 Wind Resistance, +200 Poison Damage). Needs:

Must own (not consumed):

Elandal Crushers Elandal Crushers (Boots: 25 Attack, 25 Defense, 1 slot, +25 Physical Pierce, +25 Earth Pierce, -10 Wind Resistance, 3% to Evade). Needs:

Must own (not consumed):

Item Archives[]


  • Gold Medal: this monster doesn't have a gold medal award.
  • Slay Ouroboros 5 Times (1,000,000 min dmg + def): +5 Favor Points.


  • Introduced: January 23, 2016, with spawn rate adjusted to increase with guild level on January 28, 2016.
  • The spawn rate of the Legendary Mine seems to be around 34% for a level 24 guild (based on 73 Legendary Mine spawns).
  • To get both of the Legendary gears, you’ll need a minimum of 192 Legendary drops (24*8) as well as 40 of each boot from the other two monsters, Vargulis & Samael.
  • Please help the Castle Age community by entering your loot data in THIS spreadsheet.
    • The loot thresholds in this article are also based on Ditendra08's more recent personal spreadsheet which can be found HERE.

v · e · d
Epic Boss
Gildamesh, the Orc King - Colossus of Terra - Sylvanas, the Sorceress Queen - Mephistopheles
Keira, the Dread Knight - Lotus Ravenmoore - Skaar Deathrune - Azriel, the Angel of Wrath
Alpha Mephistopheles - Lion's Rebellion - Corvintheus - Jahanna, Priestess of Aurora
Aurora - Ambrosia - Malekus - Azeron - Fenix, Risen From Ashes - Urmek, Protector of Gaia
Vorak, Devourer of Skies - Baal, Stealer of Souls - Aspect of Death - Cassandra
Epic Team
Dragons - Sea Serpents
Epic World
Cronus, the World Hydra - Battle of the Dark Legion - Genesis, the Earth Elemental
Ragnarok, the Ice Elemental - Bahamut, the Volcanic Dragon - Alpha Bahamut, the Volcanic Dragon
War of the Red Plains - Gehenna, the Fire Elemental - Valhalla, the Air Elemental
Kromash, the Storm Giant - Shardros, the Mountain Giant - Glacius, the Frost Giant
Magmos, the Lava Giant - Typhonus, the Chimera - Kraken - Alpha Kraken
Vermilion, the Tyrant - Kessaran, the Undying - Poseidon, Atlantean King
Abomination, Ancient Slime - Lord of Darkness - Svarog, the Magmapede
Lothorewyn, the Corrupted - Alperon, the Corrupted - Bonegnasher, Death Rat Horde
Verminarch, Death Rat Horde - Ogrimus, Death Rat Horde - Rodenom, Death Rat Horde
Leviathan of the Deep - Leviathan of the Grove - Leviathan of the Void
Leviathan of Wrath - Thanatos, the Reborn - Cronus Astaroth
Agamemnon, the Overseer - Alexandra, the Unbreakable
Vargulis, First Brood - Samael, Wraith Legionnaire - Chromus
Phantom of Fire - Phantom of Lightning - Phantom of Shadow
Draculia, The Blood Dominator - Fenrir, The Sun and Moon Devourer
Limited Monsters
Cronus of Ice - Cronus of Earth - Cronus of Fire
Succubus of Desire - Succubus of Greed - Succubus of Agony - Succubus of Nightmares
Special Bosses
Kull, the Orc Captain - Karn, the Minotaur
Guild Bosses
Vincent - Alpha Vincent - Army of the Apocalypse - Giant Arachnid
Guild Conquest Land Monsters
Orc Band - Orc Horde - Orc Host - Ouroboros
Heart of Darkness Co-Op Bosses
Thanatos of Fire & Ice
Siege Weapons - Damage and Healing - Monster Medals