Amorphous. The ooze can move through a space as narrow as 1 inch wide without squeezing.

False Appearance. While the ooze remains motionless, it is indistinguishable from a pool of cold water or a formation of ice.

Freezing Form. A creature that touches the ooze or hits it with a melee attack while within 5 feet of it takes 3 (1d6) acid damage plus 5 (1d10) cold damage. At the start of the ooze's turn, it also deals this damage to each creature that it is grappling.

Spider Climb. The ooze can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.

Pseudopod. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 5 (1d6 + 2) bludgeoning damage plus 7 (2d6) acid damage and 9 (2d8) cold damage, and if the target is a creature, it is grappled (escape DC 14). While grappled in this way, the target is also restrained. Until this grapple ends, the ooze can't attack another target. If the target doesn't have resistance or immunity to cold damage, its speed is reduced by 10 feet and it has disadvantage on weapon attacks until the end of its next turn.