Mindspider

The Mindspider is built and operated by the Neogi, a race of evil beings that terrorize all of known space. These vessels are powered by Lifejammers, Spelljammer Helms that drain a victim’s life force and convert it into motive force. The Lifejammer helm drains 1d8 hit points per day from creatures trapped within. It allows the ship to operate at an SR of 1/3 the level or HD of the creature being drained. At the end of each day the imprisoned operator must pass a death save or perish.
Mindspider ships are used by the Neogi to attack other space-faring vessels without provocation or mercy.