Books like The Green Pearl

When magic ruled and kings were strong...South of Eire and west of Gaul was the land of the Elder Isles, a mystical place of fairy shees, valiant knights, and the powerful magic of sorcerers living and forgotten.Now, as Aillas of Troicinet and Casimir of Lyonesse parry and feint in a duel of wits, the mysterious aura of the Green Pearl enters their souls.Its menas are subtle, but its effects are great, and as the Kings of Elder ready their swords, even the worlds of the immortals tremble...