Color Mimic

Adhesive (Object Form Only). The mimic adheres to anything that touches it. A Huge or smaller creature adhered to the mimic is grappled (escape DC 13).

Dimensional. The mimic can enter another creature's space and vice versa, and it can move through a space as narrow as 1 inch wide without squeezing. If the mimic is not attached to a solid surface, such as a wall, ceiling, or floor, it can't grapple creatures.

False Appearance. If the mimic is motionless at the start of combat, it has advantage on its initiative roll. Moreover, if a creature hasn’t observed the mimic move or act, that creature must succeed on a DC 15 Intelligence (Investigation) check to discern that it is more than ordinary color.

Heat and Cold Aversion. When the mimic takes cold or fire damage, checks made to escape the mimic's grapple automatically succeed.

Spider Climb. The mimic can climb difficult surfaces, including along ceilings, without needing to make an ability check.

Multiattack. The mimic makes two Pseudopod attacks.

Pseudopod. Melee Weapon Attack: +5, reach 10 ft. Hit: 8 (1d10 + 3) bludgeoning damage. If the target is a Large or smaller creature, it is grappled (escape DC 13) and pulled up to 5 feet toward the mimic. Ability checks made to escape this grapple have disadvantage.

Smothering Bite. Melee Weapon Attack: +5 (with advantage if the target is grappled by the mimic), reach 5 ft. Hit: The mimic attaches to the target. While attached, the target is blinded, can't become invisible, and at the start of each of the mimic's turns, the target takes 7 (1d8 + 3) piercing damage. Additionally, the mimic can't take this action, halves the damage it takes (round down), and the target takes the same amount of damage. The attached mimic moves with the target whenever the target moves, requiring none of the mimic's movement. The mimic can detach itself by spending 5 feet of its movement on its turn. A creature, including the target, can use its action to detach the mimic with a successful DC 15 Strength check.

Shape-Shift. The mimic shape-shifts to resemble a Tiny up to Huge coloring or painted surface while retaining its game statistics, or it returns to its true blob form. This way, the mimic is able to form basic symbols and words. Any equipment it is wearing or carrying isn't transformed.