Blackie had chosen its evolution direction long ago.
In actuality, flood dragons could decide the direction of their evolutions. During the evolution process, they would gather their essence blood at a certain location in order to strengthen it.
Blackie had transported all of its essence blood into its feet. It intended to evolve into a clawed dragon and attempt to reach the upper limit of flood-dragon-species that were going to evolve into the main-dragon-species.
Although Blackie had not demonstrated its ambition, it was not actually lacking in ambition at all. It knew that Lin Yuan was more than willing to help it fulfill its ambition.
The lightning from the World Cleansing struck Blackie's body repeatedly, leaving numerous giant black marks on its body.
Due to its dragon scales, Blackie appeared to have a crystallized body.