Jack of shadows by roger zelazny lord

1971 science fantasy novel by Roger Zelazny

Jack of Shadows is a science fantasynovel by American author Roger Zelazny. It was serialized in The Magazine of Fantasy and Science Fiction in 1971 and published in book form that same year.

Plot

The novel is set in a world that is tidally locked.

Thus one side of the planet is always in light, and the other in darkness. Science rules on the dayside, while magic holds sway in the night.

Jack of Shadows by Roger Zelazny - Goodreads

Powerful magical entities live on the night side of the planet, and for the most part the entities' magical powers emanate from distinct loci. Jack of Shadows (also known as Shadowjack), the main character, is unique among the magical beings in that he draws his power not from a physical location but from shadow itself.

He is nearly incapacitated in complete light or complete darkness, but given access to even a small area of shadow, his potency is unmatched.

Jack's only friend, the creature Morningstar, is punished by be Jack of Shadows: Zelazny, Roger: 9780451159762: Amazon.com: Books JAPI