The ooze can move through a space as narrow as 1 inch wide without squeezing. While near a dragons corpse you can enter it's body for more dragons  blood. 

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

The ooze expels a spray of its gelatinous mass in a 30-foot cone. Each creature in that area must make a DC 14 Dexterity saving throw. On a failed save, the creature takes 4d10 acid damage and is pulled up to 30 feet straight toward the ooze. On a successful save, the creature takes half as much damage and isn't pulled.

Your body makes up 2-3 tendrils that does 1d4 bludgeoning damage pre tendril. You deal 2d6 acid damage if you hit a target. Each tendril are able to hold one item that weighs less then 100 pounds. 

You become immune to blinded, charmed, frightened, and acid.

All blood this is from a dragon may be drained from the corpse of one. Depending on the dragon element you can use that breath damage with your slime breath weapon instead of acid damage.