Black Ooze

Black ooze is a tar like substance that makes up 90% of a serpentine. It is also present in bone dogs, though to a lesser degree.

Properties
For a serpentine, black ooze is their organs, skeleton, muscle and skin. It is somehow solid enough to hold a vaguely animal form, but liquid enough to constantly drip off of them. If separated from a serpentine it no longer hold a solid form, and seems to lose all magical properties.

The ooze that drips from a bone dog is far less potent, and does not hold any sort of solid form.

It is currently unknown if the ooze is what allows serps to preform their magic, or if the ooze is a result of the magic. It is known however that the two traits are connected, as a bone dog that doesn't produce the ooze cannot preform void magics.

Effect on Environment
Black ooze is notorious for ruining vast landscapes, when it mixes with the earth it becomes toxic to any vegetation and immune to any elemental magic.

Void Sands
The Void Sands are a result of this, an area that use to be a vast field of tall grasses now reduced to a desert. A small portion of this, known as the Serpents Jaws is where the serpentines can be found.