The great drake, Morpheus, is a respected and revered deity on the isles of Nimbaterra. His presence brings vivid, joyful dreams and rejuvenating sleep to residents of the isles. He first came to the planet when the progeny of the wind and shadow goddesses was born, the original Gryphon Heart. He followed this individual to the isles to serve as their protector. In his shadow grew glorious, bright blue poppies that tower up to six feet tall and are renowned for having the most potent medicine. Morpheus is also in charge of giving the dying relief from their pain, as well as sending them off on a peaceful and pleasant dream in their final moments.

Morpheus has an important job on the isles, which he carries out once a year each winter on a day known as The Divine Harvest. For one day, he awakens and blesses the poppies that grow throughout Nimbaterra. This causes the plants to produce more medicinal opium as well as protecting those who use it from any of its ill effects. This lasts for the duration of the season. His blessing also helps the next year's crops grow healthy and strong. Once this task is complete, he finds a comfortable place to curl up, encases himself in iridescent stone and slumbers until next year's harvest is ready. Morpheus sleeps as long as he does to regenerate his gift, which he can only give once a year.