> For the complete documentation index, see [llms.txt](https://aincrad-legacy.gitbook.io/aincrad-legacy-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://aincrad-legacy.gitbook.io/aincrad-legacy-docs/world-and-monsters/mutated.md).

# Mutated Monsters

The Mutated species system exists so that a single monster never feels like the same thing over and over as you fight it. Any ordinary creature can respawn as an empowered **Mutated** variant - tougher, more dangerous, and far more rewarding than its normal kin.

There is a great variety of combinations: **50 types of mutations** can be found in the world, categorized under four rarity tiers by how often they occur:

* [Uncommon](#uncommon-mutations)
* [Rare](#rare-mutations)
* [Epic](#epic-mutations)
* [Legendary](#legendary-mutations)

Each tier is a step up from the normal monster encounter - changing stats, skills used, even the monster's behavior. Beware: some of these combinations end up being incredibly powerful and dangerous.

## How it works

* Mutations only occur on **monster respawn**: whenever a monster is killed, the respawned one rolls for the mutation chance and, if it hits, inherits the mutation's power.
* A Mutated monster carries a **title right before its name** that marks the mutation - for example **Swift**, **Furious**, **Wall**, or **Brutal**. The title hints at how the creature was empowered: a *Swift* one moves and acts far faster, a *Wall* is a mountain of HP and defense, a *Furious* one hits much harder.
* Many are **visibly larger or smaller** than the normal monster.
* When one appears, a **map-wide announcement** calls it out, tagged with its rarity tier.
* They do not wait around forever - a Mutated monster that nobody hunts down eventually disappears.

Each mutation interacts with the base monster's stats in a specific way, so some are tankier, some are faster, some are stronger - you will need to figure it out yourself.

> Use the in-game monster info window (for example, by Sensing the monster) before engaging - it will show you the scaled stats and [armor type](/aincrad-legacy-docs/combat-system/armor-and-attack-types.md) so you can prepare.

## Uncommon mutations

Uncommon mutations occur pretty often - their odds are **1 in 20**, so you will be seeing them through the game a lot.

There are currently **20 Uncommon mutations**:

```
"Swift"      "Furious"    "Wall"       "Hardened"
"Warded"     "Brutal"     "Nimble"     "Tough"
"Savage"     "Vigorous"   "Fleet"      "Relentless"
"Colossal"   "Bulwark"    "Mighty"     "Ironhide"
"Resilient"  "Rabid"      "Sturdy"     "Berserk"
```

Uncommon mutations award **50% more Character EXP and Mastery EXP** and **100% more Col** than the base monster.

## Rare mutations

Rare mutations occur somewhat often - their odds are **1 in 50**, so you will be seeing them through the game.

There are currently **15 Rare mutations**:

```
"Titan"      "Warlord"      "Archon"    "Juggernaut"
"Tempest"    "Executioner"  "Bastion"   "Aegis"
"Colossus"   "Berserker"    "Phantom"   "Warbringer"
"Ironclad"   "Voidshell"    "Ravager"
```

Rare mutations also add **single-target skills** to those available to the base monster, making the encounter even deadlier.

Rare mutations award **200% more Character EXP and Mastery EXP** and **400% more Col**, with a **20% bonus base drop rate** over the base monster's.

## Epic mutations

Epic mutations are somewhat rarer to be found - their odds are **1 in 200**, so you will be eventually seeing them in the game.

There are currently **10 Epic mutations**:

```
"Sovereign"    "Overlord"  "Leviathan"    "Cataclysm"
"Annihilator"  "Tyrant"    "Oracle"       "Behemoth"
"Stormcaller"  "Reaper"
```

Epic mutations also add **single-target skills and AoE skills** to those available to the base monster, even altering the neurological function - changing the expected behavior and making the encounter way deadlier.

Epic mutations award **400% more Character EXP and Mastery EXP** and **900% more Col**, with a **50% bonus base drop rate** over the base monster's.

## Legendary mutations

Legendary mutations are a rare event occurrence - their odds are **1 in 1000**, so they are the last ones you will be seeing in the game. A Legendary mutation is a genuine event: ferociously powerful and worth dropping everything to hunt.

There are currently **5 Legendary mutations**:

```
"Genesis"   "Armageddon"   "Worldbreaker"   "Eclipse"
"Endbringer"
```

Legendary mutations also add **single-target skills and AoE skills** to those available to the base monster, even altering the neurological function - changing the expected behavior and making the encounter way deadlier.

Legendary mutations award **900% more Character EXP and Mastery EXP** and **1900% more Col**, with a **100% bonus base drop rate** over the base monster's.

## Extras

* Some mutations unleash a special **effect when they die**, so the fight is not always over the moment they fall.
* The **Mutated Rolls** [Global Bonus](/aincrad-legacy-docs/economy-and-social/global-bonuses.md) raises the chance for monsters to spawn Mutated server-wide.


---

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