C694 A Miracle
When the Heavenly Poison Beast was born, it was a young Heavenly Poison Beast, which was equivalent to a Mortal Beast. Of course, the body of the Heavenly Poison Beast was too terrifying. Therefore, the Heavenly Poison had a body that was around the size of a Half Divine Artifact the moment it was born.
After the Heavenly Poison Beast grew, it would become an adult Heavenly Poison Beast