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Venom Maw Hydra
Armor Class 15 (natural armor)
Hit Points 231 (22d12+88)
Speed swim 30 ft., 30 ft.
STR
19 (+4)
DEX
17 (+3)
CON
18 (+4)
INT
5 (-3)
WIS
10 (+0)
CHA
7 (-2)
Saving Throws —
Skills Perception +8, Stealth +7
Damage Immunities acid
Condition Immunities —
Senses darkvision 60 ft., passive Perception 18
Languages -
Challenge 12 (8,400 XP)
Amphibious. The venom maw hydra can breathe air and water.
Multiple Heads. The venom maw hydra has five heads. While it has more than one head, the venom maw hydra has advantage on saving throws against being blinded, charmed, deafened, frightened, stunned, and knocked unconscious. Whenever the hydra takes 25 or more damage in a single turn, one of its heads dies. If all its heads die, the hydra dies. At the end of its turn, it grows two heads for each of its heads that died since its last turn, unless it has taken cold damage since its last turn. The hydra regains 10 hp for each head regrown in this way.
Wakeful. While the hydra sleeps, at least one of its heads is awake.
Actions
Multiattack. The venom maw hydra makes as many bite or spit attacks as it has heads.
Bite. Melee Weapon Attack: +8 to hit, reach 10 ft., one target. Hit: 7 (1d6 + 4) piercing damage and 5 (2d4) acid damage.
Spit. Ranged Weapon Attack: +7 to hit, range 20/60 ft., one target. Hit: 10 (3d6) acid damage, and the target must succeed on a DC 16 Dexterity saving throw or be poisoned until the end of its next turn.
Venom Spray (Recharge 5-6). The hydra sprays caustic liquid in a 30-foot cone. Each creature in the area must make a DC 16 Dexterity saving throw, taking 22 (5d8) acid damage on a failed save, or half as much damage on a successful one.
Reactions
Tail Lash. When it is hit by a melee weapon attack within 10 feet of it, the venom maw hydra lashes out with its tail. The attacker must make a DC 16 Strength saving throw. On a failure, it takes 7 (2d6) bludgeoning damage and is knocked prone. On a success, the target takes half the damage and isn't knocked prone.
Legendary Actions
The venom maw hydra can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature's turn. The hydra regains spent legendary actions at the start of its turn.
Bite. The venom maw hydra makes one bite attack.
Spit (Costs 2 Actions). The venom maw hydra makes one spit attack.
Wallowing Rampage (Costs 3 Actions). When the venom maw hydra is in water, it wallows, causing the water to hiss, froth, and splash within 20 feet. Each creature in that area must make a DC 16 Dexterity saving throw, taking 14 (4d6) acid damage on a failed save, or half as much damage on a successful one.
Source: Creature Codex © 2018, Open Design LLC. Used under the Open Gaming License v1.0a.
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