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Gray Ooze

Medium · Ooze · CR 1/2 · Unaligned

Source. 5e 2024 Rules

9 (natural armor)

22 (3d8 + 9)

1/2

Ability Scores

Core attributes and their modifiers.

STR

DEX

-2

CON

INT

-5

WIS

-2

CHA

-4

Overview

Category Monsters

Size Medium

Type Ooze

Alignment Unaligned

XP 100

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

Saving Throws

Strength +1 Dexterity -2 Constitution +3 Intelligence -5 Wisdom -2 Charisma -4

Skills

Stealth +2

Resistances & Immunities

Damage Resistances

acid, cold, fire

Traits

Amorphous

The ooze can move through a space as narrow as 1 inch without expending extra movement to do so.

Corrosive Form

Nonmagical ammunition is destroyed immediately after hitting the ooze and dealing any damage. Any nonmagical weapon takes a cumulative -1 penalty to attack rolls immediately after dealing damage to the ooze and coming into contact with it. The weapon is destroyed if the penalty reaches -5. The penalty can be removed by casting the Mending spell on the weapon. The ooze can eat through 2-inch-thick, nonmagical metal or wood in 1 round.

Actions

Pseudopod

Cost 1

+3 to hit, reach 5 ft (1.5 m). Hit: 2d8+1 acid damage.

Melee Attack Roll: +3, reach 5 ft. 10 (2d8 + 1) Acid damage. Nonmagical armor worn by the target takes a -1 penalty to the AC it offers. The armor is destroyed if the penalty reduces its AC to 10. The penalty can be removed by casting the Mending spell on the armor.

About Gray Ooze

Gray Ooze is a medium ooze with a Challenge Rating of 1/2. It has a unaligned alignment.

In combat, this creature maintains an Armor Class of 9 and possesses 22 hit points (derived from 3d8 + 9).

GM Tips: Using Gray Ooze

2 tips available

When using Gray 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.
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 Gray Ooze

2 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.
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 1.

Solo Encounter:

A single character of level 2 (up to level 20) can face this creature in a medium to hard encounter.

Experience Point Thresholds:

Medium: 75 XP
Hard: 112 XP
Deadly: 150 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 Gray Ooze?: Gray Ooze has a Challenge Rating of 1/2, making it appropriate for parties of level 0.5.
What type of creature is Gray Ooze?: Gray Ooze is a Medium Ooze, which affects how certain spells and abilities interact with it.