A March of Kings (The Sorcerer's Ring #2) by Morgan Rice

A MARCH OF KINGS takes us one step further on Thor’s epic journey into manhood, as he begins to realize more about who he is, what his powers are, and as he embarks to become a warrior.

After he escapes from the dungeon, Thor is horrified to learn of another assassination attempt on King MacGil. When MacGil dies, the kingdom is set into turmoil. As everyone vies for the throne, King’s Court is more rife than ever with its family dramas, power struggles, ambitions, jealousy, violence and betrayal. An heir must be chosen from among the children, and the ancient Dynasty Sword, the source of all their power, will have a chance to be wielded by someone new. But all this might be upended: the murder weapon is recovered, and the noose tightens on finding the assassin. Simultaneously, the MacGils face a new threat by the McClouds, who are set to attack again from within the Ring.