Hydra¶
Rules source: Monster Manual (2025) · CR: 8 · Type: Monstrosity
Combat statistics¶
- Armor Class: 15
- Hit Points: 184 (16d12 + 80)
- Speed: Walk 40 ft., Swim 40 ft.
- Initiative: +4 (14)
- Challenge: 8 (3,900 XP)
- Skills: Perception +6
- Senses: Darkvision 60 ft., Passive perception 16
- Languages: None
- Immunities: Blinded, Charmed, Deafened, Frightened, Stunned, Unconscious
- Proficiency Bonus: +3
- Damage resistances: None listed
- Damage vulnerabilities: None listed
- Damage immunities: None listed
- Condition immunities: Blinded, Charmed, Deafened, Frightened, Stunned, Unconscious
| Ability | Score (modifier) | Saving throw |
|---|---|---|
| STR | 20 (+5) | +5 |
| DEX | 12 (+1) | +1 |
| CON | 20 (+5) | +5 |
| INT | 2 (-4) | -4 |
| WIS | 10 (+0) | +0 |
| CHA | 7 (-2) | -2 |
Revised rules text¶
Traits¶
Hold Breath. The hydra can hold its breath for 1 hour.
Multiple Heads. The hydra has five heads.
Whenever the hydra takes 25 damage or more on a single turn, one of its heads dies.
The hydra dies if all its heads are dead.
At the end of each of its turns when it has at least one living head, the hydra 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 20 Hit Points when it grows new heads.
Reactive Heads. For each head the hydra has beyond one, it gets an extra Reaction that can be used only for Opportunity Attacks.
Actions¶
Multiattack. The hydra makes as many Bite attacks as it has heads.
Bite. Melee Attack Roll: +8, reach 10 ft.
Hit: 10 (1d10 + 5) Piercing damage.
Reference from your core rulebook¶
The links below open the original rulebook pages for the complete printed stat block, including traits, actions, spellcasting, reactions, and usage limits. The printed block is authoritative if searchable text elsewhere on this page differs.
Monster Manual (2025) — PDF page 178¶
Open the original rulebook — PDF page 178 — source PDF is not included in this player reference.
Printed book page: 175.
Sources¶
- Your supplied Monster Manual (2025) — source PDF is not included in this player reference. — verified local reference
- Monster Manual — original reference dataset (legacy source)
- SRD 5.2.1 (external reference) — complete revised rules block
- Structured SRD transcription (external reference) — searchable text; printed block remains authoritative
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Icewind Dale - Rime of the Frostmaiden¶
Original campaign references: Hydra