Infinite Evolution, from Skeletons to Undead Natural Disasters!

After waking up, Shen Lang found that he had been summoned to a fantasy world specializing in beast control. And he turned out to be a spiritual beast, a mortal with the lowest rank and being despised by others! None of this matters, after all, the infinite evolution system has been awakened! Being cruelly abandoned by the first contract partner, he is about to die? Fine. System, add some points! Braving a secret realm and almost being chopped alive by a high-level alien demon? It's trivial. System, add some points! Add points to infinite evolution! A great future awaits, and a harem full of beauties beckons. What? You say a skeleton is of no use? Watch me turn into a natural disaster of undead and dominate the world forever!