Huge monstrosity, unaligned

Challenge Rating
3900 XP

The hydra is a fearsome and mythical creature that embodies the essence of danger and power. With its serpentine body and multiple heads, it is a sight to behold and a formidable adversary in any battle.

The hydra’s appearance is that of a massive reptilian beast, often towering over its opponents. Its body is covered in tough and scaly hide, providing natural armor against attacks. The most distinguishing feature of the hydra is its heads, which can range in number from three to nine, each possessing its own malevolent intelligence and deadly jaws.

One of the hydra’s most infamous traits is its ability to regenerate. When one of its heads is severed, two more grow in its place, making it a relentless opponent to face. This regenerative ability, coupled with its immense strength, makes the hydra a force to be reckoned with in combat.

Hydras are known to inhabit various environments, such as deep swamps, dark forests, or remote caverns. They are voracious predators, capable of devouring large prey with their multiple heads simultaneously. Their insatiable hunger drives them to seek out new victims, making them a constant threat to nearby settlements and adventurers.

Defeating a hydra requires strategic planning and precise coordination. Severing its heads quickly and preventing their regeneration is key to overcoming this formidable creature. Additionally, exploiting its vulnerabilities, such as fire or acid, can be effective in weakening its regenerative abilities.

Legends and tales of heroic battles against hydras have captivated the imaginations of many, showcasing the sheer power and danger these creatures possess. Whether encountered as a formidable foe or as a legendary quest, the hydra remains an iconic and challenging creature.

Special Abilities

Hold Breath

The hydra can hold its breath for 1 hour.

Multiple Heads

The hydra has five heads. While it has more than one head, the 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 fire damage since its last turn. The hydra regains 10 hit points for each head regrown in this way.

Reactive Heads

For each head the hydra has beyond one, it gets an extra reaction that can be used only for opportunity attacks.


While the hydra sleeps, at least one of its heads is awake.


  • Multiattack: The hydra makes as many bite attacks as it has heads.
  • Bite: Melee Weapon Attack: +8 to hit, reach 10 ft., one target. Hit: 10 (1d10 + 5) piercing damage.
Armor Class: 15 (natural armor)
Hit Points: 172 (15d12+75)
Speed: 30 ft. (walk), 30 ft. (swim)
Proficiency Bonus: +3


  • Skill: Perception +6


  • Passive Perception: 16
  • Darkvision: 60′
Environment: Swamp
June 21, 2024

Monster du Jour

If you're a GM, consider working this creature into your campaign. If you're a player, it might be time to do a little reading. #gsmdj

Credits: SRD 5.1