A unicorn with a size of more than 50 centimeters grows from this Growth Egg XL Unicorn of more than 20 centimeters! How? Place the egg in cold water and wait 24 to 48 hours. Then the shell of the egg breaks and the unicorn grows. Make sure that the water is always above the edge of the egg. Even if the unicorn has come out of the Mega Growth Egg Dino completely, leave it in cold water. Until he is fully grown (after about 15 days)... and then you have a new unicorn friend!