Loathsome Swamp Monster
The monster has advantage on Wisdom (Perception) checks that rely on smell.
The monster regains 10 Hit Points at the start of its turn. If the monster takes fire damage, this trait doesn’t function at the start of the monster’s next turn. The monster dies only if it starts its turn with 0 Hit Points and doesn’t Regenerate.
Actions
The monster exhales acid in a 15-foot line that is 5 feet wide. Each creature in that line must make a DC 15 Dexterity saving throw, taking 22 (5d8) acid damage on a failed save, or half as much damage on a successful one.
Variants
Whenever the troll takes at least 15 slashing damage at one time, roll a d20 to determine what else happens to it:
1-10: Nothing else happens.
11-14: One leg is severed from the troll if it has any legs left.
15- 18: One arm is severed from the troll if it has any arms left.
19-20: The troll is decapitated, but the troll dies only if it can’t regenerate. If it dies, so does the severed head.
If the troll finishes a short or long rest without reattaching a severed limb or head, the part regrows. At that point, the severed part dies. Until then, a severed part acts on the troll’s initiative and has its own action and movement. A severed part has AC 13, 10 hit points, and the troll’s Regeneration trait.
A severed leg is unable to attack and has a speed of 5 feet.
A severed arm has a speed of 5 feet and can make one claw attack on its turn, with disadvantage on the attack roll unless the troll can see the arm and its target. Each time the troll loses an arm, it loses a claw attack.
If its head is severed, the troll loses its bite attack and its body is blinded unless the head can see it. The severed head has a speed of 0 feet and the troll’s Keen Smell trait. It can make a bite attack but only against a target in its space.
The troll’s speed is halved if it’s missing a leg. If it loses both legs, it falls prone. If it has both arms, it can crawl. With only one arm, it can still crawl, but its speed is halved. With no arms or legs, its speed is 0, and it can’t benefit from bonuses to speed.
Loathsome Swamp Monster
The Loathsome Swamp Monster is a filthy menace of the marshes. It is hateful, physically vile, and lives a wretched existence in forsaken swamps, marshes, and other filthy remote areas.
Relentless. The monster’s regeneration makes them exceptionally difficult to put down in traditional combat. Only fire will send one fully to its swampy grave.
Duplication and Templates
Loathsome Swamp Monster (Robin) has been modified from other monsters.
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