Shapeless Form. The Blight Demon can fit through openings as wide as 1 inch in diameter. It can occupy other creatures' space. A creature that starts its turn in the same space as the blight demon takes 4 (1d8) necrotic damage and cannot regain hitpoints until the start of its next turn. Non-magical plants within the Blight Demon's space wither and die.
Legendary Resistance (3x/day): When the Blight Demon fails a saving throw, it can choose to succeed instead.
Multiattack. The Blight Demon makes three attacks: two with its spectral claws, and one with its vile bite.
Spectral Claws. Melee Weapon Attack: +10 to hit, reach 5 ft., 1 target. Hit: 13 (2d6 + 6) slashing damage.
Vile Bite. Melee Weapon Attack: +10 to hit, reach 5 ft., 1 target. Hit: 17 (2d10 + 6) piercing damage, plus 5 (1d10) necrotic damage. The target must succeed on a Constitution saving throw (DC 15) or be poisoned for one hour.
Breath of Decay (Recharge 5-6). The Blight Demon releases a sickening cone of necrotic gas that rots the flesh of those it touches in 30 foot cone. All affected creatures must make a Constitution saving throw (DC 15). On a failed save, a creature takes 33 (10d6) necrotic damage and has their hitpoint maximum reduced by that much. On a successful save, a creature takes half as much damage and its hitpoint maximum is not affected.
The blight demon can take 3 legendary actions, choosing from the options below. Only one legendary action can be used at a time and only at the end of another creature's turn. The blight demon regains spent legendary actions at the start of its turn.
Swipe. The blight demon makes a claw attack against a creature it can see within range.
Shifting Cloud (Costs 2 Actions). The blight demon moves up to half its speed without provoking opportunity attacks. Any creatures whose space it moves through during this time take 9 (2d8) necrotic damage.
Acid Rain (Costs 3 Actions). Acrid rain pours down in a 20-foot radius, 100-foot high cylinder centered on the blight demon. All creatures within range must make a Dexterity saving throw (DC 15). A creature takes 25 (10d4) acid damage on a failed save, and it is covered in acid. A creature that starts its turn covered in acid takes 5 (2d4) acid damage. The acid can be removed as an action. A creature that succeeds on their saving throw takes half as much damage and is not covered in acid.
Description
A horrible monster that can take any form it chooses, for it is made entirely of noxious black gas that instantly kills any plants it touches.
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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