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Sapphire Jelly

Medium · Ooze · CR 6 · Unaligned

Source. Tome of Beasts 2

144 (17d8+68)

Ability Scores

Core attributes and their modifiers.

STR

DEX

-1

CON

INT

-4

WIS

CHA

Overview

Category Monsters

Size Medium

Type Ooze

Alignment Unaligned

XP 2300

Initiative Bonus -1

Movement

Walk 30 ft (9.1 m)

Swim 15 ft (4.6 m)

Climb 15 ft (4.6 m)

Crawl 15 ft (4.6 m)

Senses

Blindsight 60 ft (18.3 m)

Passive Perception 11

Saving Throws

Wisdom +4 Charisma +4

Resistances & Immunities

Damage Immunities

cold, poison

Condition Immunities

blinded, charmed, deafened, exhaustion, frightened, poisoned, prone

Traits

Amorphous

The sapphire jelly can move through a space as narrow as 1 inch wide without squeezing.

Icy Transformation

A humanoid slain by the sapphire jelly rises 1 week later as a glacial corrupter, unless the humanoid is restored to life or its body is destroyed.

Actions

Engulf

The jelly moves up to its speed. While doing so, it can enter a Medium or smaller creature's space. Whenever the jelly enters a creature's space, the creature must make a DC 15 Dexterity saving throw.

On a successful save, the creature can choose to be pushed 5 feet back or to the side of the jelly. A creature that chooses not to be pushed suffers the consequences of a failed saving throw.

On a failed save, the jelly enters the creature's space, and the creature takes 10 (3d6) cold damage and is engulfed. The engulfed creature can't breathe, is restrained, and takes 21 (6d6) cold damage at the start of each of the jelly's turns. When the jelly moves, the engulfed creature moves with it. A sapphire jelly can have only one creature engulfed at a time.

An engulfed creature can try to escape by taking an action to make a DC 15 Strength check. On a success, the creature escapes and enters a space of its choice within 5 feet of the jelly. Alternatively, a creature within 5 feet of the jelly can take an action to pull a creature out of the jelly. Doing so requires a successful DC 15 Strength check, and the creature making the attempt takes 10 (3d6) cold damage.

Freezing Slam

+6 to hit, reach 5 ft (1.5 m). Hit: 2d6+3 plus 3d6 cold damage.

Melee Weapon Attack: +6 to hit, reach 5 ft., one creature. Hit: 10 (2d6 + 3) bludgeoning damage plus 10 (3d6) cold damage.

Multiattack

The sapphire jelly makes two freezing slam attacks.

About Sapphire Jelly

Sapphire Jelly is a medium ooze with a Challenge Rating of 6. It has a unaligned alignment.

In combat, this creature maintains an Armor Class of 9 and possesses 144 hit points (derived from 17d8+68).

GM Tips: Using Sapphire Jelly

2 tips available

When using Sapphire Jelly in your D&D 5e campaign, consider these tactical approaches:

Cold Damage Strategy: Cold-based attacks can slow or freeze. Prepare 'Heat Metal' or fire spells as countermeasures. Ice terrain can be used to create difficult terrain for melee characters.
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 Sapphire Jelly

2 strategies available

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

Cold Damage Protection: This creature deals cold damage! Get cold resistance or use fire spells. Avoid water surfaces - they can freeze and create difficult terrain. 'Heat Metal' can counter cold.
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 6.

Solo Encounter:

A single character of level 9 (up to level 20) can face this creature in a medium to hard encounter.

Experience Point Thresholds:

Medium: 4,200 XP
Hard: 6,300 XP
Deadly: 8,400 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 Sapphire Jelly?: Sapphire Jelly has a Challenge Rating of 6, making it appropriate for parties of level 6.0.
What type of creature is Sapphire Jelly?: Sapphire Jelly is a Medium Ooze, which affects how certain spells and abilities interact with it.