Unicorn
The Unicorn is a LEGENDARY pet that is available from the Rainbow Egg found in Fantasy World.
The latest Pet Simulator X value list for Unicorn can be found below:

Regular
💎 13,000 (13k)

Golden
💎 50,000 (50k)

Rainbow
💎 200,000 (200k)

Dark Matter
💎 600,000 (600k)