Reptilian with golden scales and a dark purple ceremonial outfit and a silver be

Reptilian with golden scales and a dark purple ceremonial outfit and a silver belt , exit through a magical cosmic portal made of polished amethysts, she guides a woman in a black tunic and black dress, Inside the portal there is a beautiful city of white buildings at night, red eclipse in the background portal is in the middle of a field, the sky is daytime and has a green nebula