"Transport"@en . . . . "Sky-hearts looked partially organic in nature. Their energy systems were series of root-like structures which covered much of the ship. The controls looked like blackened roots and tumours. A sky-heart was powered by both negative psychic energy (pain, distress, terror etc) and flesh of any species \u2014 so, in effect, their spaceships and other devices ate creatures if they ran low on fuel. Each Hervoken Sky-heart was equipped with a Necris, a book which acted as the starter motor for the ship. It also seemed to be responsible for channelling energy around the ship and into the Hervoken themselves. (PROSE: Forever Autumn)"@en . "Forever Autumn"@en . "Sky-heart"@en . . . . "Sky-hearts"@en . "Sky-hearts looked partially organic in nature. Their energy systems were series of root-like structures which covered much of the ship. The controls looked like blackened roots and tumours. A sky-heart was powered by both negative psychic energy (pain, distress, terror etc) and flesh of any species \u2014 so, in effect, their spaceships and other devices ate creatures if they ran low on fuel. Each Hervoken Sky-heart was equipped with a Necris, a book which acted as the starter motor for the ship. It also seemed to be responsible for channelling energy around the ship and into the Hervoken themselves. (PROSE: Forever Autumn)"@en .