Gargantuan Swarm of Small monstrosities, Chaotic Neutral
Armor Class 14 natural armor
Hit Points 550 (550d20 + 20)
Speed
STR
30 (+10)
DEX
20 (+5)
CON
30 (+10)
INT
2 (-4)
WIS
1 (-5)
CHA
1 (-5)
Saving Throws DEX +14
Damage Vulnerabilities Fire, Lightning
Damage Resistances Damage Dealt By Traps
Damage Immunities Acid, Bludgeoning, Piercing, Poison
Condition Immunities Blinded
Senses Passive Perception 1
Languages none
Challenge 30 (155,000 XP)
Proficiency Bonus +9
Traits

consume. can eat anything even other

 

Actions

grab. disarms and eats weapon

bite. bite: +10 to hit, reach 10 ft., 1 target. Hit: 1 (1 d 20 + 30) [acid] damage. 

goo fling. Ranged Weapon Attack: +10 to hit, range 10 ft., 2 target. Hit: (2 d 2 0 + 20) [acid] damage.

Reactions

eat arrow. heals from arrow shots.

Legendary Actions

only very large black goo can use      dissolve  (Costs 3 Actions). does 900 [acid] damage to target every turn  at end of 3rd turn it eats the body

Description

a living goo that eats tings and gets bigger

Lair and Lair Actions

a bone filled cave.

Lair Actions

On initiative count 3 (losing initiative = death), the black goo takes a lair action to cause one of the following effects; the black goo can’t use the same effect two rounds in a row:

  • bone fling does 1 d 20 bludgeoning damage.
  • bone armor increase armor class by 30.

Regional Effects

The region containing a legendary black goo's lair is slows all creatures except black goo which creates one or more of the following effects:

  • -100 movement speed.
  • all actions take +1 turn to do.

If the black goo dies, these effects fade over the course of 2 d 20 days.

Monster Tags: Demon

Habitat: Underdark

kingeclipsethedragonborn

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