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Portrait of the Adult Marsh Dragon
Creature · Built-in

Adult Marsh Dragon

Huge Dragon, neutral

  • Boss difficulty
  • CR 10
  • Melee
  • Tank
  • Flying
  • Boss

A dragon in its prime, slick with bog water, that rules a whole valley and takes tribute from anyone who lives there.

Statistics

Armor Class
18 (scales)
Hit Points
184 (16d12 + 80)
Speed
Walk 40 ft, Fly 80 ft, Swim 40 ft
Challenge
CR 10 · 5900 XP
Size
Huge — Takes a 3-by-3 block of map cells.
Saving throws
DEX +4, CON +9, WIS +5
Skills
Perception +5, Stealth +4
Senses
Blindsight 10 ft, Darkvision 60 ft
Languages
Common, Draconic
STR22+6
DEX10+0
CON20+5
INT14+2
WIS13+1
CHA16+3

Attacks

Multiattack

Bite, Claw × 2

Bite Melee

+10 to hit · Reach 10 ft (2 map cells)

Damage: 2d10 + 6 piercing

Claw Melee

+10 to hit · Reach 5 ft (1 map cell)

Damage: 2d6 + 6 slashing

Abilities

Marsh Breath Recharge 5–6

Exhales a line of acid.

Area
45 ft
Saving throw
Dexterity DC 17
On a failed save
Full damage.
On a successful save
Half damage.
Damage
11d6 acid

Wing Gust At will

GM guidance: beats its wings to scatter anyone close, or lifts into the air out of reach.

Defenses

Immunities
Acid

Environment & tags

Environments
Swamp
Groups
Dragons, Aquatic, Swamp
Tags
dragon, marsh, hoard, boss