Ooze

Ability Score Increase. Your Strength score increases by 1, your Constitution score increases by 2, and your Charisma score is reduced by 2.

Age. An ooze does not age. It can survive as long as it has a source of food.

Alignment. A sentient ooze can be any alignment.

Size. An ooze can take on any shape up to 5 feet wide and 6 feet tall. Regardless what shape you take on in that range, your size is medium.

Speed. An ooze does not use legs to walk and instead slithers across the ground. You ignore non-magical difficult terrain and your speed is 30 feet.

Languages. You do not have a mouth to speak from but you can understand, read, and write Common and one other language of your choice.

Blindsight. You have blindsight out to a range of 60 feet. You are blind beyond this radius.

Acidic Body. Your body is composed of a viscous acid. You are immune to acid damage because of this trait.

Squeeze. You count as a Small creature when squeezing and squeezing costs you no extra feet in movement.

Pseudopod. Your pseudopod is a natural weapon, which you can make unarmed strikes. If you hit with it, you deal acid damage equal to 1d4 + your Strength modifier, instead of bludgeoning damage normal for an unarmed strike.

Engulf. You can choose to engulf a creature when you make a successful grapple check. When you do so, both you and the target are restrained and it takes 1d6 acid damage at the start of it's turn. If a creature is reduced to 0 hit points in this way it is dissolved by you and provides you with enough nourishment to sustain you based on it's size. A tiny creature will sustain you for two days, a small creature will sustain you for four days, and a medium size creature will sustain you for up to a week.