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Marsh Hydra

Large Monstrosity · · CR 7

  • Monstrosity
  • Large
  • Tier 2

Marsh Hydra at CR 7 is logged as a large monstrosity. Habitat: swamp. Sourced from Flee, Mortals!.

Stat Block

Challenge Rating
7
Type
Monstrosity
Size
Large
Alignment
Speed
30
Habitats
Swamp
Sources
Flee, Mortals!

Ecology

Marsh Hydra is a magical creature outside the normal ecological taxonomy — too constructed to be a beast, too natural to be an aberration. It is most often found in swamp regions. It is large-sized, which shapes how it hunts, hides, or fights.

Behaviour

Marsh Hydra is territorial and aggressive; rarely capable of negotiation in any meaningful way. Its alignment varies by individual or is irrelevant — it acts on instinct, drive, or whoever commands it. It is largely instinct-driven; complex strategy is the work of whoever (or whatever) commands it.

Origin

Marsh Hydra is introduced in MCDM's Flee, Mortals! (2023). Within a campaign, its existence anchors a region with the kind of weight only an old, named species carries.

CR 7 monstersAll MonstrositysSwamp

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Frequently Asked Questions about Marsh Hydra

What is the challenge rating of Marsh Hydra?
Listed CR for Marsh Hydra: 7. Match it to a party that works against tier-2 parties.
What type of creature is Marsh Hydra?
The bestiary type for Marsh Hydra is monstrosity, large size.
Where does Marsh Hydra live?
The bestiary places Marsh Hydra in Swamp.
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QR code linking to Marsh Hydra — https://www.doungim.com/dnd/monsters/marsh-hydra Scannable QR code encoding the URL https://www.doungim.com/dnd/monsters/marsh-hydra. Point a phone camera at this code to open the Marsh Hydra page on your mobile device — useful at the table when a DM's laptop or a printed sheet is showing the page.
Scannable QR code encoding the URL https://www.doungim.com/dnd/monsters/marsh-hydra. Point a phone camera at this code to open the Marsh Hydra page on your mobile device — useful at the table when a DM's laptop or a printed sheet is showing the page.