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Genius Loci Dungeon Heart - AI-generated fantasy Monster

Genius Loci Dungeon Heart

Often created when a powerful wizard dies during the casting of a permanent 'Mighty Fortress' or similar magic, merging their soul with the foundation stones.

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HugeElemental(Earth)CR CR 12Neutral Evil

Genius Loci Dungeon Heart

Living DungeonArchitecturalBoss
HP210AC19SPD0 ft fly (hover)CRCR 12PerceptionHistory
STR
22
DEX
6
CON
24
save
INT
16
save
WIS
14
save
CHA
10
Architectural Oneness. The Heart can see and hear everything happening within the structure it inhabits. It cannot be surprised.
Immobile Core. The Heart cannot move from its central chamber, but it can rotate and levitate up to 20 feet above the floor.
Legendary Resistance. If the Heart fails a saving throw, it can choose to succeed instead (3/Day).
Multiattack. The Heart uses Granite Spear twice or uses its Tectonic Shift once and Granite Spear once.
Granite Spear. Melee Weapon Attack: to hit, reach 15 ft, one target. Hit: 18 () piercing damage as a spike erupts from the wall or floor.
Tectonic Shift. The Heart magically reshapes the room. Up to three 10-foot-square areas of the floor become difficult terrain or erupt into 5-foot-deep pits. Creatures in those areas must succeed on a Dexterity saving throw or fall prone or into the pit.
Crushing Walls (Recharge 5-6). Two parallel walls in the room slam together. Each creature in a 15-foot wide line between the walls must make a Dexterity saving throw. On a failure, a creature takes 45 () bludgeoning damage and is restrained. On a success, it takes half damage and is pushed to the nearest unoccupied space.
Wall Blockade. When a creature the Heart can see moves toward it, the Heart can cause a 10-foot-wide, 1-foot-thick stone wall to rise from the floor in front of the creature, stopping its movement.
Shift Gravity. The Heart changes the direction of gravity for one creature it can see. The target must succeed on a Strength saving throw or fall 20 feet toward a wall or the ceiling, taking falling damage as normal.
Stone Grasp. Hands made of floor tiles reach out to grab one creature. The target must succeed on a Strength saving throw or be restrained (escape ).
Dungeon Breath (Costs 2 Actions). A cloud of choking stone dust erupts in a 20-foot radius. The area is heavily obscured until the start of the Heart's next turn.
1st level
Earth TremorEvocation— Standard 5e spell effect.
5th level
Wall of StoneEvocation— The Heart can maintain this without concentration as long as it remains in its central chamber.
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