A unicorn is a mythical creature that is often depicted as a white horse with a long, flowing mane and tail. it has a single, spiral horn growing from its forehead. unicorns are often seen as symbols of purity, innocence, and magic. in a black and white drawing, a unicorn would still be beautiful and majestic. the white fur would stand out against the dark background, and the horn would sparkle like a diamond. the unicorn's eyes would be full of wisdom and compassion, and its gentle expression would be a reminder of the power of love.