Book 4 Chapter 23.3 - Price

The crystal eye in Su’s chest was instinctively formed. Not only could it release many types of energy attacks similar to magic, it even had a basic level of intelligence itself. It didn’t only have offensive abilities, it was also the backbone that controlled his body’s biological energy. As for why this type of crystal eye appeared, not even Su knew himself, and there was even more so a lack of information inside the dragonriders’ records. The most important function of the crystal eye was to  ‘reset’ the intruder cells’ genes. This meant that Su, who had the ability to turn virtually any cell in his body into intruder cells, in theory, could divide them into countless pieces. 

In other words, as long as the crystal eye existed, Su possessed...