Lavender Mortar
Thought to be a hybrid of ochre jelly and gray ooze,
this many-appendaged, web-like ooze has developed
a method of extracting nourishment from the respiration
of other living beings, hiding within the walls of a room often completely unnoticed. Believed to be a mad experiment inspired by the most insidious of wizards, this amorphous predator can lie in wait for millennia without requiring sustenance, uncharacteristic of their kind. The rooms they inhabit are invariably stone or brick, the walls and floor of which are impeccably clean and free from marks or gashes, albeit possibly littered with the dropped items and weapons of its previous victims.
Lavender Mortar
Huge Ooze, Unaligned
- Armor Class 15 (natural armor)
- Hit Points 133 (14d12 + 42)
- Speed 20 ft.
STR DEX CON INT WIS CHA 19 (+4) 5 (-3) 18 (+3) 5 (-3) 14 (+2) 1 (-5)
- Skills Perception +7, Stealth +7
- Damage Resistances cold, fire, piercing, slashing
- Damage Immunities acid, bludgeoning, thunder
- Condition Immunities blinded, charmed, deafened, exhaustion, frightened, prone
- Senses blindsight 120 ft. (blind beyond this radius), passive Perception 17
- Languages —
- Challenge 14 (11,500 XP)
Proficiency Bonus +5
Air Siphon. When the mortar hits a creature that needs to breathe with a Pseudopod attack, the target must succeed on a DC 17 Constitution saving throw or be unable to speak or cast spells with verbal components until the end of its next turn. It still counts as a breathing creature.
Death Throes. When the mortar dies, it collapses the room it inhabits, and each creature within the room must make a DC 15 Dexterity saving throw, taking 36 (8d8) bludgeoning damage on a failed save, or half as much damage on a success. Each creature in the area, whether it succeeds or fails its save, is restrained under the rubble; a creature can make a DC DC 16 Strength (Athletics) check to free itself or another creature. The room's area becomes difficult terrain until cleared.
False Appearance. While it remains motionless, the mortar is indistinguishable from the wall it inhabits.
Legendary Resistance (1/Day). If the mortar fails a saving throw, it can choose to succeed instead.
Limited Regeneration. The mortar regains 5 hit points at the start of its turn for each creature that is breathing inside the room it inhabits.
Actions
Multiattack. The lavender mortar makes three Brick or Pseudopod attacks.
Brick. Ranged Weapon Attack: +9 to hit, range 15/40 ft., one target. Hit: 11 (2d6 + 4) bludgeoning damage, and the target must make a DC 17 Constitution saving throw. On a failed save, it can't make more than one attack on its next turn, regardless of how many it could normally make.
Pseudopod. Melee Weapon Attack: +9 to hit, reach 10 ft., one target. Hit: 17 (3d8 + 4) acid damage.
Legendary Actions
The mortar can take 1 legendary action, choosing from the options below. A legendary action can be used only at the end of another creature's turn. The mortar regains a spent legendary action at the start of its turn.
Pseudopod. The mortar makes a Pseudopod attack.
Stone Shift. The mortar destroys a wall of bricks or stones within its reach. If the wall can't fit within a 20-foot cube, it destroys a section of it up to 20 feet on a side. Alternatively, the mortar creates a wall of brick or stone up to 20 feet wide, 20 feet tall, and one foot thick in an unoccupied space within its reach. A wall made in this way has 50 hit points, AC 15, and immunity to poison and psychic damage.
The mortar can make two walls in this way before it must destroy a wall for materials. If it makes a third without destroying a different wall, the oldest wall it made this way crumbles.
