Xu Nan didn't expect that the totem fragment would actually have such a wondrous use!
Although it wasn't a true resurrection, in the Azure dreamscape, the poison Dragon aback could truly exist. This could be considered to have made up for Xu Nan's earlier regret.
He chose to confirm!
Honestly speaking, using the totem fragments to resurrect Overlord-ranked monsters would consume quite a lot of prayer energy. The prayer energy that Xu Nan had obtained through the recommendation of his students was instantly depleted by 70 - 80%.
Actually, the totem fragments had other uses. Xu Nan studied it and discovered that by gathering a large number of totem fragments with the same attributes, one could obtain the power of laws within the fragments.
As for what skills he could obtain, it would depend on the attributes of the monsters he killed.