Gelatinous Cube

Gelatinous Cube

Large ooze · CR 2 · 450 XP

6 AC · 63 HP

Roll the Gelatinous Cube

Pseudopod
Engulf DC 12 DEX

Press a roll button. The dice land here.

Stat block

Type
Large ooze, unaligned
Armor Class
6
Hit Points
63 (6d10 + 30)
Speed
15 ft.
Challenge
2 (450 XP), proficiency +2
Immunities
acid
Condition immunities
Blinded, Charmed, Deafened, Exhaustion, Frightened, Prone
Senses
blindsight 60 ft., passive perception 8
Languages
None
STRDEXCONINTWISCHA
14
3
20
1
6
1

Gelatinous Cube odds against your Armor Class

Chance to hit, then average damage per attack once misses and critical hits are counted.

AttackAC 12AC 14AC 15AC 16AC 18AC 20
Pseudopod (+4)65%
8.7 dmg		55%
7.4 dmg		50%
6.8 dmg		45%
6.2 dmg		35%
4.9 dmg		25%
3.7 dmg

Gelatinous Cube hit points

The stat block uses the average, 63. Rolled, 6d10 + 30 lands anywhere from 36 to 90.

36: 0.00%37: 0.00%38: 0.00%39: 0.01%40: 0.01%41: 0.03%42: 0.05%43: 0.08%44: 0.13%45: 0.20%46: 0.30%47: 0.43%48: 0.61%49: 0.82%50: 1.09%51: 1.40%52: 1.76%53: 2.16%54: 2.59%55: 3.05%56: 3.51%57: 3.97%58: 4.39%59: 4.77%60: 5.09%61: 5.33%62: 5.47%63: 5.53%64: 5.47%65: 5.33%66: 5.09%67: 4.77%68: 4.39%69: 3.97%70: 3.51%71: 3.05%72: 2.59%73: 2.16%74: 1.76%75: 1.40%76: 1.09%77: 0.82%78: 0.61%79: 0.43%80: 0.30%81: 0.20%82: 0.13%83: 0.08%84: 0.05%85: 0.03%86: 0.01%87: 0.01%88: 0.00%89: 0.00%90: 0.00%
36chance of each total for 6d10 + 3090
Hit pointsChance
50 or more97%
63 or more53%
77 or more3%
85 or more<1%

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 () 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 () 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 () 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 () 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.

Other CR 2 monsters

Allosaurus Animated Rug of Smothering Ankheg Awakened Tree Azer Sentinel Bandit Captain Berserker Black Dragon Wyrmling Bronze Dragon Wyrmling Centaur Trooper Cultist Fanatic Druid

This page includes material from the System Reference Document 5.2.1 (“SRD 5.2.1”) by Wizards of the Coast LLC, available at dndbeyond.com/srd. The SRD 5.2.1 is licensed under the Creative Commons Attribution 4.0 International License. The averages, odds and tables are ours.