Sump Larker

medium aberration, unaligned

D&D 5.5 / SRD 5.2

Challenge 0.5 (100 XP)

Available with DM subscription
STR
12 (+1)
DEX
14 (+2)
CON
12 (+1)
INT
3 (-4)
WIS
9 (-1)
CHA
5 (-3)

Defense

Armor Class
13 (natural armor)
Hit Points
33 (6d8+6 +1)
Speed
30 ft.

Treasure & Loot Common

No significant treasure

Proficiencies & Senses

Saving Throws dexterity
Skills
Stealth +4, Survival +1
Senses
darkvision 60 ft.
passive Perception 9

Characteristics

Damage Vulnerabilities
—
Damage Resistances
poison
Damage Immunities
—
Condition Immunities
poisoned
Languages —

Traits and Actions

Gas Mask

Trait
Stealth Rule
The Sump Larker exhales a faint mustard vapor that masks its scent. It has advantage on Stealth checks made to hide in gas pools or sumps.

Cowardly Flight

Trait
Wisdom Saving Throw Rule
If the Sump Larker is reduced to half its hit points or fewer and is not part of a group of three or more, it must succeed on a DC 10 Wisdom saving throw or flee toward deeper vents until the end of its next turn.

Rasping Bite

Action
Melee Weapon Attack Custom
Poison Damage Custom
Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 5 (1d6+2) piercing damage plus 2 (1d4) poison damage.

Mustard Breath

Action
Constitution Saving Throw Rule
Poisoned Condition Custom
Recharge 5-6. The larker exhales a cloud of toxic vapor in a 15-foot cone. Each creature in that area must make a DC 12 Constitution saving throw, taking 7 (2d6) poison damage on a failed save, or half as much on a successful one. On a failure, the target is also Poisoned until the end of its next turn.

Drag to Gas

Action
Grappled Condition Custom
Hazard Custom
If the Sump Larker hits with Rasping Bite, it can attempt to grapple the target (escape DC 12). If grappling, at the start of each of the larker's turns, the target takes 2 (1d4) poison damage if adjacent to a gas pool hazard.

Grappled Condition. Speed becomes 0.

Running the encounter

Combat Behavior

Combat Style

ambush from stealth, use breath to debuff, drag into hazards

Appearance & presence

Monster Description

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