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Eldritch Ooze

Large · Ooze · CR 5 · Unaligned

Source. Tome of Beasts 2

153 (18d10+54)

Ability Scores

Core attributes and their modifiers.

STR

DEX

-2

CON

INT

-5

WIS

-2

CHA

-1

Overview

Category Monsters

Size Large

Type Ooze

Alignment Unaligned

XP 1800

Initiative Bonus -2

Movement

Walk 10 ft (3 m)

Swim 5 ft (1.5 m)

Climb 10 ft (3 m)

Crawl 5 ft (1.5 m)

Senses

Blindsight 60 ft (18.3 m)

Passive Perception 8

Resistances & Immunities

Damage Immunities

acid, cold, lightning, slashing

Condition Immunities

blinded, charmed, deafened, exhaustion, frightened, prone

Traits

Amorphous

The eldritch ooze can move through a space as narrow as 1 inch wide without squeezing.

Maddening Form

When a creature with an Intelligence of 3 or higher that can see the eldritch ooze starts its turn within 30 feet of the ooze, the ooze can force it to make a DC 14 Wisdom saving throw if the ooze isn’t incapacitated and can see the creature. If the creature fails, it takes 7 (2d6) psychic damage and is incapacitated until the end of its turn.

Unless surprised, a creature can avert its eyes to avoid the saving throw at the start of its turn. If the creature does so, it can’t see the eldritch ooze until the start of its next turn, when it can avert its eyes again. If the creature looks at the ooze in the meantime, it must immediately make the saving throw.

Spider Climb

The eldritch ooze can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.

Actions

Void-Infused Pseudopod

+6 to hit, reach 5 ft (1.5 m). Hit: 1d6+3 plus 3d6 psychic damage.

Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 6 (1d6 + 3) bludgeoning damage plus 10 (3d6) psychic damage. The target must succeed on a DC 14 Wisdom saving throw or its Intelligence score is reduced by 1d4. The target dies if this reduces its Intelligence to 0. Otherwise, the reduction lasts until the target finishes a short or long rest.

Reactions

Split

When an eldritch ooze that is Medium or larger is subjected to lightning or slashing damage, it splits into two new oozes if it has at least 10 hp. Each new ooze has hp equal to half the original ooze's, rounded down. New oozes are one size smaller than the original ooze.

About Eldritch Ooze

Eldritch Ooze is a large ooze with a Challenge Rating of 5. It has a unaligned alignment.

In combat, this creature maintains an Armor Class of 8 and possesses 153 hit points (derived from 18d10+54).

GM Tips: Using Eldritch Ooze

3 tips available

When using Eldritch Ooze in your D&D 5e campaign, consider these tactical approaches:

Climbing Advantage: This creature can climb at 10 ft. It can use walls and ceilings for tactical positioning. Consider using 'Spider Climb' negation or fighting in open areas without vertical surfaces.
Lightning Damage Awareness: Lightning attacks often have long range and high speed. Advise players to use cover and avoid metal armor/weapons. Water surfaces amplify lightning damage - avoid fighting near water.
Amorphous Movement: This creature can squeeze through spaces as small as 1 inch! Traditional barriers are ineffective. Use 'Wall of Force', 'Forcecage', or magical barriers to contain it.

Player Guide: Facing Eldritch Ooze

3 strategies available

When your party encounters this creature, keep these strategies in mind:

Climbing Defense: This creature can climb at 10 ft! It can use walls and ceilings for surprise attacks. Fight in open areas without vertical surfaces. 'Spider Climb' negation spells can help.
Lightning Damage Protection: This creature deals lightning damage! Avoid metal armor and weapons. Use cover and avoid water surfaces. 'Iron Skin' or 'Protection from Energy' can help.
Contain Amorphous Creature: This creature can squeeze through tiny spaces! Traditional barriers won't work. Use 'Wall of Force', 'Forcecage', or magical barriers. 'Create Bonfire' can block movement.

Encounter Building Calculator

Standard Party Encounter (4-5 characters):

This creature is a medium encounter for a party of 4 characters of level 5.

Solo Encounter:

A single character of level 7 (up to level 20) can face this creature in a medium to hard encounter.

Experience Point Thresholds:

Medium: 3,000 XP
Hard: 4,500 XP
Deadly: 6,000 XP

Based on D&D 5e Dungeon Master's Guide encounter building guidelines. CR roughly equals party level for medium encounters.

Frequently Asked Questions

What is the challenge rating of Eldritch Ooze?: Eldritch Ooze has a Challenge Rating of 5, making it appropriate for parties of level 5.0.
What type of creature is Eldritch Ooze?: Eldritch Ooze is a Large Ooze, which affects how certain spells and abilities interact with it.