Riftwar Saga Complete 4 Volumes: Magician Apprentice, Magician Master, Silverthorn, Darkness at Sethanon

These are the first books of the larger series called the Riftwar Cycle. This set is called the Riftwar Saga. Here's more infer: The majority of Feist's works are part of The Riftwar Cycle, and feature the worlds of Midkemia and Kelewan.[4] Human magicians and other creatures on the two planets are able to create rifts through dimensionless space that can connect planets in different solar systems. The novels and short stories of The Riftwar Universe record the adventures of various people on these worlds