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This material from the 5th edition SRD is published under the OGL
By LadyofHats (Own work) [CC0], via Wikimedia Commons
Public Domain Image
Image is not part of the SRD
Huge monstrosity, unaligned
Armor Class: 15 (natural armor)
Hit Points: 172 (15d12+75)
Speed: 30 ft., swim 30 ft.
20 (+5) 12 (+1) 20 (+5) 2 (-4) 10 (+0) 7 (-2)
Skills: Perception +6
Condition Immunity:
Senses: passive Perception 16
Challenge: 8 (3,900 xp)
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.

Wakeful. 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.

Unofficial Description

A hydra looks like a long-necked dragon with multiple snake-like heads.

The material in this box is unofficial, and is not quoted from a SRD or published material.


Back to Main Page5e System Reference DocumentMonster → Hydra

Facts about "Hydra"
AlignmentUnaligned +
AuthorSRD5 +
Canontrue +
Challenge Rating8 +
Experience Points3,900 +
FeaturesHold Breath +, Multiple Heads +, Reactive Heads +, Wakeful +, Multiattack + and Bite +
Hit Dice15d12+75 +
Hit Points172 +
PublicationSRD5 +
SizeHuge +
SortTextHydra +
TitleHydra +
TypeMonstrosity +