Magical Dragon Egg. Place the egg in a glass of water. After about 12-24 hours, the egg will crack open, and the dragon will slowly make its way out and grow. Contents: 1 x Dragon Egg. Surprise chocolate eggs are a thing of the past. This magical egg hides a very special secret! When placed in a glass of water, the egg will crack open after about 12-24 hours, and a small dragon will slowly hatch from the eggshells.