The Hydra Clan Boss has 6 heads of which you will be guaranteed to face 4 in a monthly rotation with the other 2 potentially spawning on decapitation of one of the original 4 heads. Each head has its own unique abilities and skills and you will need to consider these as you build your team. Below you will find a breakdown of all the hydra heads.

A1 – Spectral Fangs:
Attacks 1 enemy. Has a 50% chance of placing a [Fear] debuff for 2 turns. This debuff cannot be blocked or resisted.

After the first attack, attacks all enemies under [Fear] or [True Fear] debuffs.

A2 – Curse Storm – 3 Turn Cooldown:
Attacks all enemies. Damage increases by 25% for each debuff an enemy is under.

Almighty Specter [Passive]:
When attacked by enemies not under [Perfect Veil] buffs places a [True Fear] debuff on them for one turn. This debuff cannot be blocked or resisted.

Decreases damage taken from [Poison] debuffs by 90%. Decreases the damage all Hydra heads take from AoE attacks by 10%.

Damage from skills that scale when based on enemy MAX HP cannot exceed 10% of the head’s MAX HP when attacking this head. Damage taken in one tick from [HP Burn] debuffs cannot exceed 20,000 HP. Damage taken from reflected damage, the Warmaster Mastery or the Giant Slayer Mastery cannot exceed 50,000 per attack.

Immune to [Stun], [Freeze], [Sleep], [Provoke], [Block Active Skills], [Block Passive Skills], [Fear], [True Fear], and [Petrification] debuffs. Also immune to HP exchange effects, HP balancing effects, cooldown increasing effects and Turn Meter reduction effects.

Decapitation [Passive]:
Whenever this head is decapitated, removes all [Fear] and [True Fear] debuffs from all enemy champions then places a [Perfect Veil] buff for 2 turns on 2 random enemy champions.

A1 – Crippling Jaws:
Attacks all enemies. Places a 25% [Weaken] debuff for 2 turns. This debuff cannot be resisted.
Will not place the [Weaken] debuff on enemies with [Strengthen] buffs.

A2 – Thirst of Pain – 4 Turn Cooldown:
Places a 50% [Ally Protection] buff on all Heads except this one for 2 turns, then places a 30% [Reflect Damage] buff on this Head for 2 turns.
Also places a [Provoke] debuff for 1 turn on the enemy with the highest Critical Damage.

A3 – Share Suffering – 3 Turn Cooldown:
Attacks 1 enemy. Places a [Pain Link] debuff for 3 turns, then grants this Head an Extra Turn.

Almighty Suffering [Passive]:
Increases the Resist of all Hydra Heads by 50.

Decreases the damage all Hydra Heads take from AoE attacks by 30%. Decreases the damage taken from [Poison] debuffs by 90%.

Damage from skills that scale based on enemy MAX HP cannot exceed 10% of the Head’s MAX HP when attacking this Head. Damage taken in one tick from [HP Burn] debuffs cannot exceed 20,000 HP. Damage taken from Reflected Damage, the Warmaster Mastery, or the Giant Slayer Mastery cannot exceed 50,000 HP per attack.

Immune to [Stun], [Freeze], [Sleep], [Provoke], [Block Active Skills], [Block Passive Skills], [Fear], [True Fear], and [Petrification] debuffs. Also immune to HP exchange effects, HP balancing effects, cooldown increasing effects and Turn Meter reduction effects.

Decapitation Effect [Passive]:
Places a [Shield] buff on all enemy Champions for 2 turns equal to 30% of their MAX HP whenever this Head is decapitated

A1 – Thieving Jaws:
Attacks the enemy with the most buffs. Steals all buffs from the target and steals 50% of the target’s Turn Meter.

A2 – Spoils of Mischief – 3 Turn Cooldown:
Applies a [Buff Spread] effect, taking all buffs from this Head and placing them on all Heads. Changes the duration of all spread buffs to 2 turns.

Almighty Mischief [Passive]:
Has a 75% chance of redirecting an enemy attack onto another random Head. Will not occur if this Head is under a [Hex] debuff.

Decreases the damage all Hydra heads take from AoE attacks by 10%.

Damage from skills that scale when based on enemy MAX HP cannot exceed 10% of the head’s MAX HP when attacking this head. Damage taken in one tick from [HP Burn] debuffs cannot exceed 20,000 HP. Damage taken from Reflected Damage, the Warmaster Mastery, or the Giant Slayer Mastery cannot exceed 50,000 HP per attack.

Immune to [Stun], [Freeze], [Sleep], [Provoke], [Block Active Skills], [Block Passive Skills], [Fear], [True Fear], [Poison] and [Petrification] debuffs. Also immune to HP exchange effects, HP balancing effects, cooldown increasing effects and Turn Meter reduction effects.

Decapitation Effect [Passive]:
Whenever this head is decapitated, fully depletes the Turn Meters of all Hydra Heads.

A1 – Dripping Jaws:

Attacks all enemies. Places three 5% [Poison] debuffs for 2 turns. Also has a 75% chance of placing a [Leech] debuff for 2 turns.

A2 – Leeching Blight – 3 Turn Cooldown:

Attacks all enemies. Places a 5% [Poison] debuff for 3 turns. Instantly deals damage from all [Poison] debuffs on each enemy under [Leech] debuff.

A3 – Blinding Smog – 5 Turn Cooldown:

Places a [Poison Cloud] buff on all Hydra Heads for 2 turns. This buff cannot be removed or transferred.

Almighty Haze [Passive]
This head receives double damage from [HP Burn] debuffs.

Decreases the damage all Hydra Heads take from AoE attacks by 10%.

Damage from skills that scale based on enemy MAX HP cannot exceed 10% of the Head’s MAX HP when attacking this head. Damage taken in one tick from [HP Burn] debuffs cannot exceed 40,000 HP. Damage Taken from Reflected Damage, the Warmaster Mastery, or the Giant Slayer Mastery cannot exceed 50,000 HP per attack.

Immune to [Stun], [Freeze], [Sleep], [Provoke], [Block Active Skills], [Block Passive Skills], [Fear], [True Fear], [Poison] and [Petrification] debuffs. Also immune to HP exchange effects, HP balancing effects, cooldown increasing effects and Turn Meter reduction effects

Decapitation Effect [Passive]

Inflicts damage to all Heads under [HP Burn] debuffs whenever this head is decapitated.

A1 – Gnashing Jaws:

Attacks all enemies. Places a 50% [Decrease ATK] debuff for 2 turns.

Passive Effect
Each enemy hit received increases the [Vengeance] counter by 1. Whenever the [Vengeance] counter reaches 15, places a [Vengeance] buff, a [Block Debuffs] buff, and a 15% [Reflect Damage] buff on this Head for 1 turn, then attacks all enemies.[The [Vengeance] counter resets everytime it reaches 15. Enemy hits will not be counted while under a [Vengeance] buff.]

A2 – Furious Roar – 4 Turn Cooldown:

Attacks all enemies. Places a [Provoke] debuff for 1 turn. Also places a 50% [Increase ATK] buff on this head for 3 turns..

Almighty Wrath [Passive]
Decreases the damage all Hydra Heads take from AoE attacks by 10%.

Damage from skills that scale based on enemy MAX HP cannot exceed 10% of the Head’s MAX HP when attacking this head. Damage taken in one tick from [HP Burn] debuffs cannot exceed 20,000 HP. Damage Taken from Reflected Damage, the Warmaster Mastery, or the Giant Slayer Mastery cannot exceed 50,000 HP per attack.

Immune to [Stun], [Freeze], [Sleep], [Provoke], [Block Active Skills], [Block Passive Skills], [Fear], [True Fear], [Poison] and [Petrification] debuffs. Also immune to HP exchange effects, HP balancing effects, cooldown increasing effects and Turn Meter reduction effects

Decapitation Effect [Passive]

Inflicts damage to all Heads whenever this Head is decapitated. If this Head is decapitated while under a [Vengeance] buff, the damage inflicted to all Heads increases, and there is a 25% chance of placing a [Leech] debuff on all Heads for 2 turns.

A1 – Agonizing Jaws:

Attacks the enemy with the lowest HP. Place a 100% [Heal Reduction] debuff for 2 turns.

A2 – Speed of Decay – 4 Turn Cooldown:

Removes all debuffs from all Heads, then fills the Turn Meters of all Heads by 30%

A3 – Rotten Ward – 5 Turn Cooldown:

Removes all debuffs from the Head with the lowest HP, then places a [Life Barrier] buff on them for 4 turns. This [Life Barrier] buff cannot be removed.

Almighty Decay [Passive]
Whenever an enemy Champion is healed, decreases their MAX HP by 15% of the value of the Heal (up to 75% of their MAX HP).

Decreases damage taken from [Poison] debuffs by 90%. Decreases the damage all Hydra heads take from AoE attacks by 10%.

Damage from skills that scale when based on enemy MAX HP cannot exceed 10% of the head’s MAX HP when attacking this head. Damage taken in one tick from [HP Burn] debuffs cannot exceed 20,000 HP. Damage taken from reflected damage, the Warmaster Mastery or the Giant Slayer Mastery cannot exceed 50,000 per attack.

Immune to [Stun], [Freeze], [Sleep], [Provoke], [Block Active Skills], [Block Passive Skills], [Fear], [True Fear], and [Petrification] debuffs. Also immune to HP exchange effects, HP balancing effects, cooldown increasing effects and Turn Meter reduction effects.

Decapitation Effect [Passive]

Whenever this head is decapitated, heals all enemy Champions by 30% of their MAX HP, then restores 50% of the MAX HP of any enemy Champions whose MAX HP has been decreased.