Magician's Gambit: Belgariad 3

Fate leads on... <br> <br> To stranger lands and darker magic...<br> <br> Travelling through ever more dangerous realms, Garion and his companions pursue the stolen Orb. Among them Ce'Nedra, the Imperial Princess - one whose fate seems bound to his. As they get closer to their goal and battle looms, Garion's powers of sorcery - and his spirit - are tested to their limits.