Roger Zelazny's To Rule in Amber (Dawn of Amber Series #3)

In this volume, a new universe, with its infinite shadow reflections, is brought into being by Dworkin via the Pattern he has created with his own blood. But his creation has caused a great upheaval in the faraway Courts of Chaos. While Oberon uses Trumps to bring over family members to the relative safety of his new world, Dworkin—who has become unhinged from the extraordinary strains of creating the universe—mysteriously disappears.

Assassins, shapeshifters, Pattern ghosts and double-cro...