Cinnamon Custard

Corrosive Form. A creature that hits the pudding with a melee attack roll takes 4 (1d8) Acid damage. Nonmagical ammunition is destroyed immediately after hitting the pudding and dealing any damage. Any nonmagical weapon takes a cumulative −1 penalty to attack rolls immediately after dealing damage to the pudding and coming into contact with it. The weapon is destroyed if the penalty reaches −5. The penalty can be removed by casting the Mending spell on the weapon.

In 1 minute, the pudding can eat through 2 feet of nonmagical wood or metal.

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

Multiattack: The Custard makes two Burning Pseudopod Attacks and releases its Cinnamon Haze if available. 

Burning Pseudopod. Melee Attack Roll: +8, reach 10 ft. Hit: 17 (4d6 + 3) Acid damage. And the target is grappled. A create can make an attempt to escape with a Strength Check, DC 16. 

Cinnamon Haze - Recharge 5-6. The custard emits a cloud of
cinnamon flavored dust in an emanation range 100 feet. All hostile creatures in range must make a DC 16 Con Saving Throw. On a failure, characters  are unable to speak including the use of verbal spell components.  On a successThe haze dissipates at the start of the custards next turn. 

Budding Split. Trigger: While the custard is Hude, Large or Medium and has 10+ Hit Points, it becomes Bloodied or is subjected to Slashing damage. Response: The custard splits into two new Cinnamon Custards. Each new custard is one size smaller than the original custard and acts on its Initiative. The original custard's Hit Points are divided evenly between the new custards (round down).

Launch Globule - The custard spews a globule in a 10 ft. emanation centered on a creature within 30 ft. Dex Save DC 13. On a failure, 2d8 acid damage and any creatures affected receive one level of exhaustion. Success - Half damage and no other affects apply.