Gelatinous Cube

The monster fills its entire space and is transparent. Other creatures can enter that space, but a creature that does so is subjected to the monster's Engulf and has Disadvantage on the saving throw. Creatures inside the monster have Total, and the monster can hold one Large creature or up to four Medium or Small creatures inside itself at a time. As an action, a creature within. of the monster can pull a creature or an object out of the monster by succeeding on a, and the puller takes damage.

Even when the monster is in plain sight, a creature must succeed on a to notice the monster if the creature hasn't witnessed the monster move or otherwise act.

Melee Attack: +4 to hit. reach 5 ft. Hit: 3d6 + 2 acid damage.

Dexterity Save: DC 12. target: creatureOrObject. Failure: 3d6 acid damage.