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Hydra
Size
Huge
Monster Race
Monstrosity
Alignment
Unaligned
Armor Class
15 (natural armor)
Hit Points
172 (15d12 + 75)
Speed
6m, swim 6m
Attributes
STR
20 (+5)
DEX
12 (+1)
CON
20 (+5)
INT
2 (−4)
WIS
10 (+0)
CHA
7 (−2)
Features
Skills
Perception +6
Senses
Darkvision 12m, passive Perception 16
Challenge
8 (3,900 XP)
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.
Wakeful
While the hydra sleeps, at least one of its heads is awake.
Actions
Multiattack
The hydra makes as many bite attacks as it has heads.
Bite
Melee Weapon Attack: +8 to hit, reach 2m, one target. Hit: 10 (1d10 + 5) piercing damage.