Large Monstrosity, Neutral
Armor Class 18 18
Hit Points 369 (16d12 + 3)
Speed 15 ft.
STR
18 (+4)
DEX
18 (+4)
CON
18 (+4)
INT
16 (+3)
WIS
19 (+4)
CHA
10 (+0)
Saving Throws CON +10, WIS +10
Skills Arcana +16
Damage Vulnerabilities Fire, Lightning
Damage Immunities Acid, Necrotic, Poison
Senses Passive Perception 16
Languages Celestial Cant speak but can understand being spoken to
Challenge 18 (20,000 XP)
Proficiency Bonus +6
Traits

Skin of Stone. Rom's Stone-like body allows her to have double resistance (half of half damage) when attacked. This applies to both non-magical weapons and any (non-vulnerability spells(half damage)). (AC 12)

Face of Flesh. Rom's face is made of spider flesh so it takes damage normally.

Boss Class: Once Any boss class enemy goes below 25% hp Gains Boss Rally

Actions

Teleport. Can teleport up to 90 feet (recharge time of 30 seconds)

Spider Swarm: Summon 8 Spiderlings 

Multiattack. Rom makes 3 flail attacks. Flail. unarmed attack, +15 to hit, reach 5 ft.,  one creature. Hit: 16(2d8+5) non-magic bludgeoning damage. 

Magic Shock-wave. Range 20 ft.. Rom causes a shock wave of magic emanating from her. Each creature within range must make a DC 17 Dexterity saving throw or take 20 (8d4+6) force damage and is pushed 30 feet away on a failed save, or half as much damage on a successful one.

Upward Ice Barrage. Range 50 ft. Rom creates giant bricks of ice from the ground. A creature within range must make a DC 13 Dexterity saving throw taking  (3d10+2) ice damage on a failed save

Bonus Actions

Teleport. Can teleport up to 90 feet (recharge time of 30 seconds)

Reactions

Teleport. Can teleport up to 90 feet (recharge time of 30 seconds)

Spider Swarm: Summon 8 Spiderlings 

Legendary Actions

Linear Ice Barrage 3 Actions. Rom fires giant bricks of ice in a 10-foot wide, 60-foot long, line. Each creature in that area must make a DC 16 Dexterity saving throw, taking 28 (3d8+4) force damage on a failed save, or half as much damage on a successful one.

Multiattack. Rom makes 3 flail attacks. Flail. unarmed attack, +15 to hit, reach 5 ft.,  one creature. Hit: 16(2d8+5) non-magic bludgeoning damage. 

Rally Cry: allows All Rom spiderlings to make 1 additional attack ignoring initiative position

Mythic Actions

Boss Rally: (is only accessible at 25% Hp) Calls any Boss class enemy into battle from a radius of 300ft, any creature within a 5ft radius must make a DC 23 Str saving throw taking (2d20+12) force damage and is pushed away 30ft away from Rom and proned on a failed save, or half as much on and isn't pushed or proned on a successful one.

Description

Rom, The Vacuous Spider is a huge Spider-Like Great one. Her body is long and fat but is made of a stone-like substance speckled with white hair. Her face is made of spider flesh but resembles the face of a Grub worm.

Lair and Lair Actions

The world seems to become replaced by an endless ocean whose water surface can be walked on top of, and a giant bright red full moon appears in the night sky.

Lair Actions

On initiative count, Rom takes a lair action to cause the following effect:

  • Summon 10 Spiderlings within 20 ft of Rom.
  • A light fog surrounds Rom in a 120ft radius 2in tall
  • A dense fog surrounds Rom from 120ft 20ft tall to any remaining space beyond the light fog, fog can be looked into for 5ft deep (requiring a 19-20 perception check) but impossible to see any further 
  • Max Compastity: Only 12 spiderlings can be in the lair at a time 
  • Once Rom dies all creatures excluding (Any creature with the Boss class special trait) get teleported out of Lair

Monster Tags: abberation

Habitat: Underwater

pikea58

Comments

Posts Quoted:
Reply
Clear All Quotes