Help pls!

I have this manhwa that i forgot what it was called. The plot is about a “person” that keeps getting reincarnated. Started as animals, plants, and after thousands of years, he becomes human. At first the mc( black hair blue eyes?) hates humans since they killed him in his past life as an elephant. But because her mother in this life is really gentle with him, he seems to open up. However, some people killed the mother. The mc has some superpowers that can kill all human population.

I know i explained a little confusuing but I don’t remember anything more.