Phantasos

In Ovid's Metamorphoses, Phantasus (Φαντασος (Phantasos, "fantasy"/"") was one of the Oneiroi (the deities of dream), the sons (triplets, sometimes simply the most prominent three of many) of Hypnos (god of sleep) and Pasithea (goddess of relaxation, meditation and hallucinations), (or Nyx (goddess of night) and Erebus (god of darkness)).

His brothers/fellow Oneiroi are Morpheus (who excels in presenting human images) and Icelos or Phobetor (who presents images of beasts, birds and serpents). Phantasos was the God of surreal dreams; he represents the inanimate objects seen in Prophetic dreams, images of earth, rock, water and wood.

...
Wikipedia