What are the characteristics of Aztec sacrifice?

The god worshipped by the Aztecs is called Vezlo Pochette, which means clumsy hummingbird. It is said that he was an adult when he jumped out of his mother's body and killed 400 of his brothers with lightning. The ritual of offering sacrifices to Vizlopoulos was cruel, and the priest dedicated the heart of the living to this bloodthirsty god.