Gelatinous Cube
The cube takes up its entire space. Other creatures can enter the 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 can be seen but have total cover.
A creature within 5 feet of the cube can take an action to pull a creature or object out of the cube. Doing so requires a successful DC 12 Strength check, and the creature making the attempt takes 10 (3d6) acid damage.
The cube can hold only one Large creature or up to four Medium or smaller creatures inside it at a time.
Even when the cube is in plain sight, it takes a successful DC 15 Wisdom (Perception) check to spot a cube that has neither moved nor attacked. A creature that tries to enter the cube’s space while unaware of the cube is surprised by the cube.
Actions
The cube moves up to its speed. While doing so, it can enter Large or smaller creatures’ spaces. Whenever the cube enters a creature’s space, the creature must make a DC 12 Dexterity saving throw.
On a successful save, the creature can choose to be pushed 5 feet back or to the side of the cube. A creature that chooses not to be pushed suffers the consequences of a failed saving throw.
On a failed save, the cube enters the creature’s space, and the creature takes 10 (3d6) acid damage and is engulfed. The engulfed creature can’t breathe, is restrained, and takes 21 (6d6) acid damage at the start of each of the cube’s turns. When the cube moves, the engulfed creature moves with it.
An engulfed creature can try to escape by taking an action to make a DC 12 Strength check. On a success, the creature escapes and enters a space of its choice within 5 feet of the cube.
Oozes
Oozes, sometimes referred to as slimes or jellies, describe creatures that resemble that of an amorphous blob. These blobs can come in different shapes and forms—such as a more stable cube or more liquid puddle-like slithering creature—that inform an adventurer on the unique properties and dangers that ooze can pose. Even a difference in color can be indicative of a helpful trait.
While oozes may look harmless with their lack of features such as eyes or discernible body parts, they are anything but. Despite their lack of sight they are more than capable of sensing any vibration in their vicinity, thriving in underground environments with echoey chambers and darker spaces that give them an advantage over their prey.
Tactics. An ooze’s main goal is to devour and disintegrate any prey it can find with their acidic bodies. They often lack intelligence and will go after the easiest prey, giving adventurers the room to try and distract an ooze with a meal other than themselves. The job isn’t so simple after that, though, as oozes disintegrate weapons just as well as biological creatures, so adventurers must be wise in how they attack these odd jellies.
Gelatinous Cube
Not yet described
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