Hold Breath
The hydra can hold its breath for 1 hour.
Hydra 5e reference with CR 8, type, stat block details, token resources, terrain tools, fear hooks, and monster hunt generation.
A multi‑headed reptilian beast with a stout, crocodilian body and five or more long serpentine necks ending in dragon‑like heads. It has a ridge of spines down its back and moves on muscular legs; if a head is severed, two more can sprout.
Quick 5e Answer
Hydra is a CR 8 monstrosity for D&D 5e. This page includes AC 15, HP 172 (15d12 + 75), a ready stat block, a downloadable PDF, and connected encounter tools.
Official SRD 5.2.1 Stat Block
Huge, Monstrosity, Unaligned
This stat block uses official SRD 5.2.1 content under CC-BY-4.0 attribution.
The hydra can hold its breath for 1 hour.
The hydra has multiple heads, has Advantage on saving throws against several conditions, and can grow new heads.
For each head beyond one, the hydra gets an extra Reaction that can be used only for Opportunity Attacks.
While the hydra sleeps, at least one of its heads is awake.
The hydra makes as many Bite attacks as it has heads.
Melee Attack Roll: +8, reach 10 ft. Hit: 10 (1d10 + 5) Piercing damage.
The hydra uses an extra Reaction for an Opportunity Attack.
Hydra 5e reference: CR 8 monstrosity, AC 15, HP 172 (15d12 + 75), PDF sheet, token, portrait, terrain, fear hooks, and hunt tools for Swamp. This page is part of the complete Monster Almanac stat block library. It includes a official srd 5.2.1 stat block with a downloadable PDF sheet, plus connected prep tools. Use this Monster Almanac page to move from search result to table prep: read the quick 5e reference, open the stat block, download the PDF when available, generate a token or portrait prompt, build matching terrain, create a monster-bound fear hook, and turn Hydra into a focused hunt.
Hydra can be used in Swamp when you want a CR 8 monstrosity that helps shape combat pressure, exploration tension, or narrative danger.
Hydra works well as a supporting threat, recurring danger, or encounter-building piece inside a larger scene.
The attached official srd 5.2.1 stat block gives you a table-ready rules reference, and the PDF button keeps the sheet easy to print or save before the session.
This makes Hydra useful not only as a monster reference, but also as a scene-shaping piece for travel danger, dungeon pressure, wilderness discovery, or a stronger narrative threat.
Hydra is listed in Monster Almanac as a CR 8 monstrosity.
Hydra is listed as a monstrosity.
Yes. This page includes a official srd 5.2.1 stat block and a downloadable PDF sheet.
Yes. This page links to Hydra token, portrait, chatbot, terrain, fear hook, and monster hunt tools for fast D&D prep.
After choosing Hydra, the next step is usually to connect the monster with a place, an encounter shape, a supporting cast, or a character who fears it. Use the tools below to keep building without leaving the Monster Almanac workflow.