Gargantuan Swarm of Large elementals, Chaotic Evil
Armor Class 1 Natural armor
Hit Points 100 (20d20)
Speed 100 ft., Once this monster finds prey it will stop at nothing until it has consumed them and will follow them to the ends of the earth if it has to.
STR
17 (+3)
DEX
15 (+2)
CON
24 (+7)
INT
15 (+2)
WIS
15 (+2)
CHA
15 (+2)
Saving Throws STR +9, DEX +8, CON +13, INT +8, WIS +8, CHA +8
Damage Vulnerabilities Fire, Force, Radiant
Damage Resistances Acid, Cold, Lightning, Necrotic, Thunder; Bludgeoning, Piercing, and Slashing from Magic Weapons
Damage Immunities Bludgeoning, Piercing, and Slashing from Nonmagical Attacks
Senses Tremorsense The second someone steps upon the bog it knows , Passive Perception 20
Languages All Understands all languages, but can only speak R'lyehian R'lyehian
Challenge 20 (25,000 XP)
Proficiency Bonus +6
Traits

Altering Terrain. Once per turn, the terrain changes in order from Marsh, Forest, Badlands, Swamp, and Hills in that order.

Element of Surprise. The Corrupted Bog will always go first despite initiative.

Sinking Mud. Each turn the players must succeed a Dexterity saving throw of 8+your strength modifier.

Actions

Summon Spawn of Cthulhu. Roll 1d20 to determine how many units this ability summons. Each Summon has its own turn and sentients

Summon Tentacles. Roll 1d4 to determine how many Tentacles this ability summons. Tentacles have no movement. Their attack range is 30 units, the same as their high in feet.  Each Summon has its own turn and sentients. Can be used once per combat.

 

Bonus Actions

Swarm of Locust. Summon a swarm of locust to plague 1 player for 5 turns doing 1d4 damage per turn

Reactions

Unrelenting Mud. Every time a player moves they must succeed in a dexterity saving throw of 8+your strength modifier.

Description

The Corrupted Bog lies in wait for anyone foolish enough to cross into it. Upon immediately summon Spawn of Cthulhu and sending its prey to an early muddy grave. Its only Weakness seams to be magic, however some that have managed to escape say they see a bright beam of light deep within the bog.

Monster Tags: Abominations

Habitat: Swamp

CthuwuSenpai

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