Domortuus Astra
The Domortuus Astra is an EXCLUSIVE pet that was available from the Exclusive Shop. It was released in the Hell Update. It has the same enchants as the Empyrean Agony.
The latest Pet Simulator X value list for Domortuus Astra can be found below:

Regular
💎 104,000,000,000 (104b)

Golden
💎 Not Available

Rainbow
💎 Not Available

Dark Matter
💎 Not Available