Create an image of a heroic cat riding a flying unicorn through a surreal landscape filled with floating rainbows and upside-down trees.

Envision a scene of a valiant feline, with a vibrant coat, courageously riding a majestic unicorn that is soaring through the sky. The unicorn is unique, boasting of the ability to fly. They traverse a dreamscape that challenges the ideas of the ordinary - colorful rainbows suspend in the air and trees grow in an unusual way, stretching their branches towards the earth instead of the sky. The entire backdrop embraces the parameters of surrealism, stretching the boundaries of reality and imagination alike.