Chapter 620: Terror Seized, The Trapped Seven Color City

Chu Mu’s white nightmare was already tenth phase top tier monarch rank. As long as he got the soul items, Chu Mu had hope of strengthening to another emperor rank.

Once he has three emperor ranks, Chu Mu would be even stronger. At least, single handedly taking on a first rank tribe would be no problem.

Of course, the one able to become emperor rank with the right soul items was only White Nightmare.

White Nightmare has a subtype, so it would need double the resources.

Multiple type soul pets and single type soul pets had a clear difference when it came to strengthening. For single type soul pets, Chu Mu just had to find one emperor soul item of the right type and just strengthen. One times the cost would be enough to reach emperor rank.

With multiple types, he had to find a soul item of the same multiple types, needing double the resources to strengthen an emperor rank. He couldn’t split up the types and strenghten them separately.

Worth noting was, fighting ranks couldn’t be split up and strengthened, because it would cause a permanent...