Companion Ooze

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

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

Corrode Metal. Any nonmagical weapon made of metal that hits the ooze corrodes. After dealing damage, the weapon takes a permanent and cumulative −1 penalty to damage rolls. If its penalty drops to −5, the weapon is destroyed. Nonmagical ammunition made of metal that hits the ooze is destroyed after dealing damage.

The ooze can eat through 2-inch-thick, nonmagical metal in 1 round.

Hungry. The ooze can choose to absorb a tiny object. Metal or organic material absorbed in this way will dissolve over 24 hours. The ooze can absorb up to three objects at once. As an action, the ooze can regurgitate one of its absorbed objects.

Tactile Telepathy. You can communicate telepathically with the ooze up to 300 ft away as long as you both are on the same plane of existence. You can give the ooze more complex commands than you would be able to provide a regular familiar.

Pseudopod. Melee Weapon Attack: +3 to hit, reach 5 ft., one target. Hit: 4 (1d4 + 1) bludgeoning damage plus 5 (2d4) acid damage, and if the target is wearing nonmagical metal armor, its armor is partly corroded and takes a permanent and cumulative −1 penalty to the AC it offers. The armor is destroyed if the penalty reduces its AC to 10.

Camouflage. The ooze can change its texture, opacity, and color to match those of its surroundings, becoming unseen. While camouflaged, the ooze gains advantage on all stealth checks. Camouflage is broken upon making an attack or taking damage.