Creature Reference Back to Creatures

Ooze, Sinoper

Medium · Ooze · CR 9 · Unaligned

Source. Tome of Beasts 3

170 (20d8+80)

Ability Scores

Core attributes and their modifiers.

STR

DEX

-3

CON

INT

-4

WIS

CHA

-3

Overview

Category Monsters

Size Medium

Type Ooze

Alignment Unaligned

XP 5000

Initiative Bonus -3

Movement

Walk 20 ft (6.1 m)

Swim 10 ft (3 m)

Climb 20 ft (6.1 m)

Crawl 10 ft (3 m)

Senses

Blindsight 60 ft (18.3 m)

Passive Perception 12

Skills

Perception +2

Resistances & Immunities

Damage Immunities

acid, cold, fire, poison

Damage Resistances

nonmagic B/P/S weapons

Condition Immunities

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

Traits

Amorphous

Move through space 1ft.+ wide with o squeezing.

False Appearance

While motionless indistinguishable from that work of art.

Ooze Nature

The sinoper ooze doesn’t require sleep.

Spider Climb

Difficult surfaces even ceilings no ability check.

About Ooze, Sinoper

Ooze, Sinoper is a medium ooze with a Challenge Rating of 9. It has a unaligned alignment.

In combat, this creature maintains an Armor Class of 7 and possesses 170 hit points (derived from 20d8+80).

GM Tips: Using Ooze, Sinoper

2 tips available

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

Climbing Advantage: This creature can climb at 20 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 Ooze, Sinoper

2 strategies available

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

Climbing Defense: This creature can climb at 20 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 9.

Solo Encounter:

A single character of level 12 (up to level 20) can face this creature in a medium to hard encounter.

Experience Point Thresholds:

Medium: 9,000 XP
Hard: 13,500 XP
Deadly: 18,000 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 Ooze, Sinoper?: Ooze, Sinoper has a Challenge Rating of 9, making it appropriate for parties of level 9.0.
What type of creature is Ooze, Sinoper?: Ooze, Sinoper is a Medium Ooze, which affects how certain spells and abilities interact with it.