Seaweed Shape. The blight can use its action to reshape its body into the form of a humanoid or beast that is Small, Medium, or Large. Its statistics are otherwise unchanged. The disguise is convincing, unless the blight is in bright light or the viewer is within 30 feet of it, in which case the seams between the seaweed strands are visible. The kelpie returns to its true form if it takes a bonus action to do so or if it dies.
False Appearance. While the blight remains motionless in its true form, it is indistinguishable from normal seaweed.
Unusual Nature. The blight doesn’t require air, food, drink, or sleep.
Multiattack. The blight makes two Slam attacks, each of which it can be replaced with one use of Necrotic Constriction.
Slam. Melee Weapon Attack: +4 to hit, reach 10 ft., one target. Hit: 11 (2d8 + 2) piercing damage. If the target is a Medium or smaller creature, it is grappled (escape DC 12).
Necrotic Constriction. One creature grappled by the blight must make a DC 12 Constitution saving throw, taking 21 (6d6) necrotic damage on a failed save, or half as much damage on a successful one.
Enter the description for how legendary actions work for your monster here.
Legendary Action Name (Costs # Actions). Enter the description for your legendary action.
Enter the description for how mythic actions work for your monster here.
Mythic Action Name (Costs # Actions). Enter the description for your mythic action.
Description
An algae blight is a dead kelpie that was reanimated through necromantic magic. It resembles a pile of wet seaweed. It is able to shape its body into various forms, often assuming the aspect of hideous creatures such as chuuls or skum to provoke terror in their prey.
Lair and Lair Actions
Enter a description of your monster's lair here.
Lair Actions
On initiative count # (losing initiative ties), the [monster name] takes a lair action to cause one of the following effects; the [monster name] can’t use the same effect two rounds in a row:
- Enter a description for a lair action.
- Enter a description for a lair action.
Regional Effects
The region containing a legendary [monster name]’s lair is [enter the effect description], which creates one or more of the following effects:
- Enter a regional effect description.
- Enter a regional effect description.
If the [monster name] dies, these effects fade over the course of #d# days.
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