Merveil, The Siren
Merveil, the Twisted, is the final boss of Act 1 in Path of Exile. She resides in the Cavern of Anger, a flooded chamber at the end of the storyline. Merveil was once a member of the Vaal civilization, a powerful empire that corrupted itself with forbidden power. She became obsessed with obtaining immortality and experimented on herself, infusing her body with the life force of captured creatures. This dark ritual transformed her into a grotesque creature, granting her immense power but driving her insane.

Merveil's boss fight is a two-stage encounter. In the first stage, she appears human-like with glowing blue hair and wields powerful cold spells. The arena is flooded, and Merveil can teleport around the room. Players must avoid her attacks while damaging glowing pillars to drain the water from the arena. Once the water is gone, Merveil transforms into her second stage.

In her second stage, Merveil takes on a more monstrous appearance, with several writhing tentacles sprouting from her back. She gains access to new attacks, including powerful slams and area-of-effect spells. Players must dodge her attacks and focus their damage on Merveil to defeat her.

Merveil is a challenging boss fight for new players, but with proper preparation and knowledge of her mechanics, she can be defeated. Here are some tips for defeating Merveil:
  - Resistance: Merveil deals primarily cold damage, so it is important to have a high resistance to cold. This can be achieved by equipping gear with cold resistance or by using potions that grant temporary cold resistance.
- Movement: Merveil is very mobile, so it is important to be able to dodge her attacks. This can be done by using movement skills such as Dash or Blink Arrow.
- Damage: Focus your damage on Merveil. Area-of-effect skills can be effective in the first stage when she is surrounded by adds, but single-target damage is more important in the second stage.
Defeating Merveil rewards players with access to Act 2 of Path of Exile. It also grants a unique item and a large amount of experience points.
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Merveil Abilities
Merveil has two forms. The first, humanoid form uses the following skills:
- Ice Storm that leaves chilled ground.
- A barrage of ice bolts.
- Summons animated weapons with Cyclone.
- Summons statues.
- Normal melee attacks.
After the first form is defeated, Merveil will turn into the second siren form (Merveil, The Twisted), which uses the following skills:
- Creates geysers that rapidly hit anything within them for cold damage.
- Summon Brood Larva and Unstable Larva
- Freezing Pulse
- Cold projectile mortar
- Screech

Merveil, the Siren
| Stats | 
Resists Fire. Resists Cold. Resists Lightning. Resists Chaos. Area: The Cavern of Anger 
 monster dropped item rarity +% [10000]monster slain experience +% [250]
 cannot be taunted when taunted ms [0]
 65% reduced Energy Shield Recharge Rate
 cannot be stunned for ms after stun finished [2000]
 cannot be stunned while stunned [1]
 heal aura owner % max life on death [0]
 | 
| Spectre | N | 
| Area | The Cavern of Anger | 
| Tags | caster, cold_affinity, demon, flesh_armour, has_dual_wield_melee, has_one_hand_sword, has_one_handed_melee, humanoid, large_height, medium_movement, melee, not_dex, not_str, physical_affinity, ranged, red_blood, slashing_weapon | 
| 
Life: 650%Energy Shield From Life: 100%Ailment Threshold: 650%Resistance: (Resists Fire: 15/30/40)  (Resists Cold: 15/30/40)  (Resists Lightning: 15/30/40)  (Resists Chaos: 7/20/25)Damage: 240%Accuracy: 100%Critical Strike Chance: +5.5%Critical Strike Multiplier: +130%Attack Distance: 6 ~ 9Attack Time: 1.455 SecondDamage Spread: ±30%Experience: 200%Model Size: 150%Type: IllusionBossMetadata: BossMerveil | 
Level 84
The following values do not include map affix bonuses, monster buff bonuses, altar bonuses, atlas skill bonuses(ex: Thirst for Knowledge -70% damage taken).
| 
Life: 229,418Armour: 16,265Evasion: 8,120Energy Shield: 16,265Damage: 2,288Spell Damage: 2,288Accuracy: 538Attack Time: 1.455Experience: 26,500Ailment Threshold: 229,418Chill: 725Shock: 725Brittle: 4,104Scorch: 725Sap: 2,004 | 
The following values are skill base values and do not include map affix bonuses, monster buff bonuses, altar bonuses, atlas skill bonuses, monster base damage(ex: The Maven 150% multiplier), monster rarity bonuses (ex: unique 70% more, unique attack 33% less).
| 
Melee
 Attack, RangedAttack, MirageArcherCanUse, Projectile, MeleeSingleTarget, Multistrikeable, Melee, ProjectilesFromUserDefault Attack
 Base Damage: 1601–2974
 Critical Strike Chance: 5.5%
 Attack Time: 1.455 Second
 
 Strike your foes down with a powerful blow. 
 skill can fire arrows [1]skill can fire wand projectiles [1]
 
 | 
MerveilIceSpear
 Spell, TriggerableCritical Strike Chance: 10%
 Cast Time: 1.77 Second
 
 Deals 673.4 to 1010 Cold DamageSecond form has 400% increased Critical Strike Chance
 Cannot Freeze
 base is projectile [1]
 monster penalty against minions damage +% final vs player minions [-25]
 | 
| 
MerveilTeleport
 SpellCritical Strike Chance: 0%
 Cast Time: 1 Second
 | 
MerveilAnimateWeapon
 SpellCritical Strike Chance: 0%
 Cast Time: 1 Second
 Cooldown Time: 5 Second
 
 Base duration is 5 seconds | 
| 
MerveilIcestorm
 Spell, Damage, Area, Duration, Trappable, Totemable, Mineable, Multicastable, Triggerable, Fire, Cascadable, CanRapidFire, AreaSpellFirestorm
 Critical Strike Chance: 0%
 Cast Time: 0.9 Second
 Cooldown Time: 6 Second
 
 Flaming bolts rain down over the targeted area. They explode when landing, dealing damage to nearby enemies. 
 Deals 1143 to 1429 Cold DamageBase duration is 6 seconds
 One impact every 0.05 seconds
 firestorm base area of effect +% [-58]
 firestorm drop ground ice duration ms [3600]
 firestorm use server effects [1]
 is area damage [1]
 monster penalty against minions damage +% final vs player minions [-35]
 
 | 
MerveilSummonStatue
 Spell, TriggerableCritical Strike Chance: 0%
 Cast Time: 0.7 Second
 Cooldown Time: 6 Second
 | 
|
Level 82
| 
Life: 185,650Armour: 14,425Evasion: 7,608Energy Shield: 14,425Damage: 2,041Spell Damage: 2,041Accuracy: 499Attack Time: 1.455Experience: 26,012Ailment Threshold: 185,650Chill: 587Shock: 587Brittle: 3,321Scorch: 587Sap: 1,622 | 
The following values are skill base values and do not include map affix bonuses, monster buff bonuses, altar bonuses, atlas skill bonuses, monster base damage(ex: The Maven 150% multiplier), monster rarity bonuses (ex: unique 70% more, unique attack 33% less).
| 
Melee
 Attack, RangedAttack, MirageArcherCanUse, Projectile, MeleeSingleTarget, Multistrikeable, Melee, ProjectilesFromUserDefault Attack
 Base Damage: 1429–2653
 Critical Strike Chance: 5.5%
 Attack Time: 1.455 Second
 
 Strike your foes down with a powerful blow. 
 skill can fire arrows [1]skill can fire wand projectiles [1]
 
 | 
MerveilIceSpear
 Spell, TriggerableCritical Strike Chance: 10%
 Cast Time: 1.77 Second
 
 Deals 618.8 to 928.2 Cold DamageSecond form has 400% increased Critical Strike Chance
 Cannot Freeze
 base is projectile [1]
 monster penalty against minions damage +% final vs player minions [-25]
 | 
| 
MerveilTeleport
 SpellCritical Strike Chance: 0%
 Cast Time: 1 Second
 | 
MerveilAnimateWeapon
 SpellCritical Strike Chance: 0%
 Cast Time: 1 Second
 Cooldown Time: 5 Second
 
 Base duration is 5 seconds | 
| 
MerveilIcestorm
 Spell, Damage, Area, Duration, Trappable, Totemable, Mineable, Multicastable, Triggerable, Fire, Cascadable, CanRapidFire, AreaSpellFirestorm
 Critical Strike Chance: 0%
 Cast Time: 0.9 Second
 Cooldown Time: 6 Second
 
 Flaming bolts rain down over the targeted area. They explode when landing, dealing damage to nearby enemies. 
 Deals 999.4 to 1249 Cold DamageBase duration is 6 seconds
 One impact every 0.05 seconds
 firestorm base area of effect +% [-58]
 firestorm drop ground ice duration ms [3600]
 firestorm use server effects [1]
 is area damage [1]
 monster penalty against minions damage +% final vs player minions [-35]
 
 | 
MerveilSummonStatue
 Spell, TriggerableCritical Strike Chance: 0%
 Cast Time: 0.7 Second
 Cooldown Time: 6 Second
 | 
|
Level 78
| 
Life: 118,548Armour: 11,328Evasion: 6,667Energy Shield: 11,328Damage: 1,620Spell Damage: 1,620Accuracy: 428Attack Time: 1.455Experience: 24,754Ailment Threshold: 118,548Chill: 375Shock: 375Brittle: 2,121Scorch: 375Sap: 1,036 | 
The following values are skill base values and do not include map affix bonuses, monster buff bonuses, altar bonuses, atlas skill bonuses, monster base damage(ex: The Maven 150% multiplier), monster rarity bonuses (ex: unique 70% more, unique attack 33% less).
| 
Melee
 Attack, RangedAttack, MirageArcherCanUse, Projectile, MeleeSingleTarget, Multistrikeable, Melee, ProjectilesFromUserDefault Attack
 Base Damage: 1134–2106
 Critical Strike Chance: 5.5%
 Attack Time: 1.455 Second
 
 Strike your foes down with a powerful blow. 
 skill can fire arrows [1]skill can fire wand projectiles [1]
 
 | 
MerveilIceSpear
 Spell, TriggerableCritical Strike Chance: 10%
 Cast Time: 1.77 Second
 
 Deals 521.8 to 782.6 Cold DamageSecond form has 400% increased Critical Strike Chance
 Cannot Freeze
 base is projectile [1]
 monster penalty against minions damage +% final vs player minions [-25]
 | 
| 
MerveilTeleport
 SpellCritical Strike Chance: 0%
 Cast Time: 1 Second
 | 
MerveilAnimateWeapon
 SpellCritical Strike Chance: 0%
 Cast Time: 1 Second
 Cooldown Time: 5 Second
 
 Base duration is 5 seconds | 
| 
MerveilIcestorm
 Spell, Damage, Area, Duration, Trappable, Totemable, Mineable, Multicastable, Triggerable, Fire, Cascadable, CanRapidFire, AreaSpellFirestorm
 Critical Strike Chance: 0%
 Cast Time: 0.9 Second
 Cooldown Time: 6 Second
 
 Flaming bolts rain down over the targeted area. They explode when landing, dealing damage to nearby enemies. 
 Deals 762.9 to 953.6 Cold DamageBase duration is 6 seconds
 One impact every 0.05 seconds
 firestorm base area of effect +% [-58]
 firestorm drop ground ice duration ms [3600]
 firestorm use server effects [1]
 is area damage [1]
 monster penalty against minions damage +% final vs player minions [-35]
 
 | 
MerveilSummonStatue
 Spell, TriggerableCritical Strike Chance: 0%
 Cast Time: 0.7 Second
 Cooldown Time: 6 Second
 | 
|
Level 73
| 
Life: 70,541Armour: 8,348Evasion: 5,633Energy Shield: 8,348Damage: 1,209Spell Damage: 1,209Accuracy: 352Attack Time: 1.455Experience: 22,776Ailment Threshold: 70,541Chill: 223Shock: 223Brittle: 1,262Scorch: 223Sap: 616 | 
The following values are skill base values and do not include map affix bonuses, monster buff bonuses, altar bonuses, atlas skill bonuses, monster base damage(ex: The Maven 150% multiplier), monster rarity bonuses (ex: unique 70% more, unique attack 33% less).
| 
Melee
 Attack, RangedAttack, MirageArcherCanUse, Projectile, MeleeSingleTarget, Multistrikeable, Melee, ProjectilesFromUserDefault Attack
 Base Damage: 846–1571
 Critical Strike Chance: 5.5%
 Attack Time: 1.455 Second
 
 Strike your foes down with a powerful blow. 
 skill can fire arrows [1]skill can fire wand projectiles [1]
 
 | 
MerveilIceSpear
 Spell, TriggerableCritical Strike Chance: 10%
 Cast Time: 1.77 Second
 
 Deals 420.3 to 630.5 Cold DamageSecond form has 400% increased Critical Strike Chance
 Cannot Freeze
 base is projectile [1]
 monster penalty against minions damage +% final vs player minions [-25]
 | 
| 
MerveilTeleport
 SpellCritical Strike Chance: 0%
 Cast Time: 1 Second
 | 
MerveilAnimateWeapon
 SpellCritical Strike Chance: 0%
 Cast Time: 1 Second
 Cooldown Time: 5 Second
 
 Base duration is 5 seconds | 
| 
MerveilIcestorm
 Spell, Damage, Area, Duration, Trappable, Totemable, Mineable, Multicastable, Triggerable, Fire, Cascadable, CanRapidFire, AreaSpellFirestorm
 Critical Strike Chance: 0%
 Cast Time: 0.9 Second
 Cooldown Time: 6 Second
 
 Flaming bolts rain down over the targeted area. They explode when landing, dealing damage to nearby enemies. 
 Deals 542.7 to 678.4 Cold DamageBase duration is 6 seconds
 One impact every 0.05 seconds
 firestorm base area of effect +% [-58]
 firestorm drop ground ice duration ms [3600]
 firestorm use server effects [1]
 is area damage [1]
 monster penalty against minions damage +% final vs player minions [-35]
 
 | 
MerveilSummonStatue
 Spell, TriggerableCritical Strike Chance: 0%
 Cast Time: 0.7 Second
 Cooldown Time: 6 Second
 | 
|
Level 68
| 
Life: 41,817Armour: 6,127Evasion: 4,739Energy Shield: 6,127Damage: 897Spell Damage: 897Accuracy: 290Attack Time: 1.455Experience: 20,510Ailment Threshold: 41,817Chill: 132Shock: 132Brittle: 748Scorch: 132Sap: 365 | 
The following values are skill base values and do not include map affix bonuses, monster buff bonuses, altar bonuses, atlas skill bonuses, monster base damage(ex: The Maven 150% multiplier), monster rarity bonuses (ex: unique 70% more, unique attack 33% less).
| 
Melee
 Attack, RangedAttack, MirageArcherCanUse, Projectile, MeleeSingleTarget, Multistrikeable, Melee, ProjectilesFromUserDefault Attack
 Base Damage: 628–1165
 Critical Strike Chance: 5.5%
 Attack Time: 1.455 Second
 
 Strike your foes down with a powerful blow. 
 skill can fire arrows [1]skill can fire wand projectiles [1]
 
 | 
MerveilIceSpear
 Spell, TriggerableCritical Strike Chance: 10%
 Cast Time: 1.77 Second
 
 Deals 337.4 to 506.1 Cold DamageSecond form has 400% increased Critical Strike Chance
 Cannot Freeze
 base is projectile [1]
 monster penalty against minions damage +% final vs player minions [-25]
 | 
| 
MerveilTeleport
 SpellCritical Strike Chance: 0%
 Cast Time: 1 Second
 | 
MerveilAnimateWeapon
 SpellCritical Strike Chance: 0%
 Cast Time: 1 Second
 Cooldown Time: 5 Second
 
 Base duration is 5 seconds | 
| 
MerveilIcestorm
 Spell, Damage, Area, Duration, Trappable, Totemable, Mineable, Multicastable, Triggerable, Fire, Cascadable, CanRapidFire, AreaSpellFirestorm
 Critical Strike Chance: 0%
 Cast Time: 0.9 Second
 Cooldown Time: 6 Second
 
 Flaming bolts rain down over the targeted area. They explode when landing, dealing damage to nearby enemies. 
 Deals 384.7 to 480.8 Cold DamageBase duration is 6 seconds
 One impact every 0.05 seconds
 firestorm base area of effect +% [-58]
 firestorm drop ground ice duration ms [3600]
 firestorm use server effects [1]
 is area damage [1]
 monster penalty against minions damage +% final vs player minions [-35]
 
 | 
MerveilSummonStatue
 Spell, TriggerableCritical Strike Chance: 0%
 Cast Time: 0.7 Second
 Cooldown Time: 6 Second
 | 
|
Level 13
| 
Life: 696Armour: 107Evasion: 339Energy Shield: 107Damage: 35Spell Damage: 35Accuracy: 26Attack Time: 1.455Experience: 594Ailment Threshold: 696Chill: 2Shock: 2Brittle: 12Scorch: 2Sap: 6 | 
The following values are skill base values and do not include map affix bonuses, monster buff bonuses, altar bonuses, atlas skill bonuses, monster base damage(ex: The Maven 150% multiplier), monster rarity bonuses (ex: unique 70% more, unique attack 33% less).
| 
Melee
 Attack, RangedAttack, MirageArcherCanUse, Projectile, MeleeSingleTarget, Multistrikeable, Melee, ProjectilesFromUserDefault Attack
 Base Damage: 25–46
 Critical Strike Chance: 5.5%
 Attack Time: 1.455 Second
 
 Strike your foes down with a powerful blow. 
 skill can fire arrows [1]skill can fire wand projectiles [1]
 
 | 
MerveilIceSpear
 Spell, TriggerableCritical Strike Chance: 0%
 Cast Time: 1.77 Second
 | 
| 
MerveilTeleport
 SpellCritical Strike Chance: 0%
 Cast Time: 1 Second
 | 
MerveilAnimateWeapon
 SpellCritical Strike Chance: 0%
 Cast Time: 1 Second
 Cooldown Time: 9 Second
 
 Base duration is 15 seconds | 
| 
MerveilIcestorm
 Spell, Damage, Area, Duration, Trappable, Totemable, Mineable, Multicastable, Triggerable, Fire, Cascadable, CanRapidFire, AreaSpellFirestorm
 Critical Strike Chance: 0%
 Cast Time: 0.9 Second
 
 Flaming bolts rain down over the targeted area. They explode when landing, dealing damage to nearby enemies. 
 | 
MerveilSummonStatue
 Spell, TriggerableCritical Strike Chance: 0%
 Cast Time: 0.7 Second
 Cooldown Time: 10 Second
 | 
|