Gelatinous Cube
Ooze · Large
A nearly transparent cube of jelly that fills a corridor from wall to wall and slides along it, swallowing and dissolving everything in its path. Bones, coins and swords float inside it, and the careless walk straight in.
- Danger
- A fight to fear
- How it is met
- Alone, day and night
- Challenge
- 2
- SRD 5.2.1 stat blocks
- Gelatinous Cube
Hear it
- Gelatinous Cube Moving (Loop) (On Patreon, Guardian tier)
- Gelatinous Cube Exploding (On Patreon, Guardian tier)
Where it is met
Also: Dungeon, Sewer
Stat blocks (D&D 5e)
Gelatinous Cube
Large Ooze, Unaligned
AC 6 · Initiative −4 (6)
HP 63 (6d10 + 30)
Speed 15 ft.
| Str | Dex | Con | Int | Wis | Cha |
|---|---|---|---|---|---|
| 14 (+2), save +2 | 3 (−4), save −4 | 20 (+5), save +5 | 1 (−5), save −5 | 6 (−2), save −2 | 1 (−5), save −5 |
Immunities Acid; Blinded, Charmed, Deafened, Exhaustion, Frightened, Prone
Senses Blindsight 60 ft.; Passive Perception 8
Languages None
CR 2 (XP 450; PB +2)
Traits
Ooze Cube. The cube fills its entire space and is transparent. Other creatures can enter that space, but a creature that does so is subjected to the cube’s Engulf and has Disadvantage on the saving throw. Creatures inside the cube have Total Cover, and the cube can hold one Large creature or up to four Medium or Small creatures inside itself at a time. As an action, a creature within 5 feet of the cube can pull a creature or an object out of the cube by succeeding on a DC 12 Strength (Athletics) check, and the puller takes 10 (3d6) Acid damage.
Transparent. Even when the cube is in plain sight, a creature must succeed on a DC 15 Wisdom (Perception) check to notice the cube if the creature hasn’t witnessed the cube move or otherwise act.
Actions
Pseudopod. Melee Attack Roll: +4, reach 5 ft. Hit: 12 (3d6 + 2) Acid damage.
Engulf. The cube moves up to its Speed without provoking Opportunity Attacks. The cube can move through the spaces of Large or smaller creatures if it has room inside itself to contain them (see the Ooze Cube trait). Dexterity Saving Throw: DC 12, each creature whose space the cube enters for the first time during this move. Failure: 10 (3d6) Acid damage, and the target is engulfed. An engulfed target is suffocating, can’t cast spells with a Verbal component, has the Restrained condition, and takes 10 (3d6) Acid damage at the start of each of the cube’s turns. When the cube moves, the engulfed target moves with it. An engulfed target can try to escape by taking an action to make a DC 12 Strength (Athletics) check. On a successful check, the target escapes and enters the nearest unoccupied space. Success: Half damage, and the target moves to an unoccupied space within 5 feet of the cube. If there is no unoccupied space, the target fails the save instead.
This work includes material from the System Reference Document 5.2.1 ("SRD 5.2.1") by Wizards of the Coast LLC, available at https://www.dndbeyond.com/srd. The SRD 5.2.1 is licensed under the Creative Commons Attribution 4.0 International License, available at https://creativecommons.org/licenses/by/4.0/legalcode.
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