Kapitel 608: Silver's Mutation

Shortly after feeding Silver the Tier-3 healing pill, Leon wrinkled his brows in thought while swinging his bone spear in a continuous and circular loop that forms a defensive circle the rats could not breach with their inferior strength.

'I have become quite proficient in the Everlasting Blood Mantra. Refining Origin Blood only takes up one-third of the time when I first started practicing this technique. Practicing any further than this is will just be a waste of time…' Leon mused.

He has reached his current speed limit in refining Origin Blood from the mutant rats' extracted blood essence.

'Despite refining so many Origin Blood from these mutant rats, they have not been able to provide me with any new type of Origin Blood. These rodents serve no other purpose than to replenish my stamina…'

At this point, Leon had most likely slaughtered at least several hundred thousands of flying mutant rats, but despite this, he only has 11 types of Origin Blood.