Sky-heart

The Sky-hearts were the Hervoken's spacecrafts. The sky-hearts were extremely large; the one underneath Blackwood Falls laid under much of the town. They were extremely powerful when in perfect shape, able to survive anything up to being thrown into a star.

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