Hydra¶

Hydra

Summoned with Foe Foundry

Huge Monstrosity (Fiend*, Hydra)

AC 16 Initiative +5 (15)

HP 178 (17d12 + 68)

Speed 40 ft., swim 40 ft.

Skills Stealth +5, Perception +7

Resistances Acid

Immunities Blinded, Charmed, Deafened, Frightened, Stunned, Unconscious

Senses Darkvision 60 ft., Passive Perception 17

CR 8 (3,900 XP; PB +3)

Traits

Multi-Headed. The hydra has five heads. It can make as many Opportunity Attacks as it has heads.

Regrowth. At the start of its turn, if the hydra's Severed Head reaction triggered last turn, it heals 20 hitpoints. If it healed, it generates two new heads.

Actions

Multiattack. The hydra makes one attack for each of its heads.

Flesh-Dissolving Bites. Melee Weapon Attack: +8 to hit, reach 5ft., one target. Hit 9 (1d8 + 5) piercing damage and 2 (1d4) acid damage. On a hit, the target must make a DC 16 Constitution saving throw or become Poisoned until the end of its next turn.

Bonus Actions

Feeding Frenzy. The hydra moves up to 30 feet without provoking opportunity attacks. If it ends the movement next to a target that has lost half its hit points or more, it may make an attack against that target.

Reactions (One Per Head)

Severed Head. When the hydra takes 20 or more damage from an attack, one of its heads is severed. Each other creature in a 20 foot emanation must make a DC 16 Dexterity saving throw, taking 17 (7d4) acid damage on a failed save. The hydra may use its Regrowth ability at the start of its next turn.

Foulblood Hydra

Summoned with Foe Foundry

Huge Monstrosity (Fiend*, Hydra)

AC 18 Initiative +10 (20)

HP 287 (23d12 + 138)

Speed 40 ft., swim 40 ft.

Skills Perception +9

Resistances Acid

Immunities Blinded, Charmed, Deafened, Frightened, Stunned, Unconscious

Senses Darkvision 60 ft., Passive Perception 19

CR 12 (8,400 XP; PB +4)

Traits

Black Blood. When the hydra takes piercing or slashing damage, it splashes nearby creatures with black ichor. Each non-demon creature within 10 feet takes 4 Acid damage and its movement speed is halved until the end of its next turn. This ability activates only once per turn.

Blinding Sickness (Disease). This creature can inflict the Blinding Sickness disease: An infected creature's mind is gripped by pain and its eyes turn milky white. The creature has disadvantage on Wisdom checks and Wisdom saving throws and is Blinded.

Multi-Headed. The hydra has five heads. It can make as many Opportunity Attacks as it has heads.

Regrowth. At the start of its turn, if the hydra's Severed Head reaction triggered last turn, it heals 20 hitpoints. If it healed, it generates two new heads.

Legendary Prowess (3/day). The hydra can choose to succeed on a saving throw or ability check instead of failing. When it does so, it takes 15 force damage.

Actions

Multiattack. The hydra makes one attack for each of its heads It may replace two attacks with a use of its Toxic Breath.

Flesh-Dissolving Bites. Melee Weapon Attack: +10 to hit, reach 5ft., one target. Hit 10 (1d8 + 6) piercing damage and 2 (1d4) acid damage. The attack deals an additional 7 (3d4) acid damage if the target is at or below half-health.

Toxic Breath (Recharge 5-6). The hydra exhales toxic gas in a 15-foot cone. Each creature in that area must make a DC 18 Constitution saving throw. On a failure, the creature takes 21 (6d6) poison damage and is Poisoned for 1 minute (save ends at end of turn). If a creature fails this save three times, it becomes afflicted by Blinding Sickness.

Reactions (One Per Head)

Feast of Souls. Whenever a creature dies within 120 feet of the hydra it may choose to gain 30 temporary hitpoints, recharge an ability, or regain an expended usage of an ability.

Severed Head. When the hydra takes 20 or more damage from an attack, one of its heads is severed. Each other creature in a 20 foot emanation must make a DC 18 Dexterity saving throw, taking 20 (8d4) acid damage on a failed save. The hydra may use its Regrowth ability at the start of its next turn.

Legendary Actions (3)

Charge. The hydra moves up to half its speed and makes an Flesh-Dissolving Bites attack.

Replenish. The hydra gains 10 temporary hitpoints. It can't take this action again until the start of its next turn.

Toxic Breath. The hydra uses or attempts to recharge its Toxic Breath ability. It can't take this action again until the start of its next turn.