Gezras of Leyda was 11th century born witcher known for founding the current incarnation of School of the Cat. 1 Biography 2 Gwent: The Witcher Card Game 3 Personality 4 Notes 5 Gallery 6 References Gezras, born as half-elf, was hated by his foster father who considered him to be an abomination.1 Sold at a very young age to the mages of Stygga Castle, he was trained in the early Cat School to become a witcher. Unfortunately for Gezras, he was chosen as one of the test subjects for a new ...