Empyrean Agony
The Empyrean Agony is an EXCLUSIVE pet that was sold in the Exclusive Shop. It was released in the Heaven Update. It has the same enchants as the Domortuus Astra. It was not hatchable from the Empyrean Egg.
The latest Pet Simulator X value list for Empyrean Agony can be found below:

Regular
💎 82,000,000,000 (82b)

Golden
💎 Not Available

Rainbow
💎 Not Available

Dark Matter
💎 Not Available