The Sand Stone — Erin Manning

Sam Oldfield is an ordinary kid with an ordinary life. Or is he? When he wakes up in a hospital he is told he's been missing for three days -- so why does he remember nearly a year's worth of adventures in a magical kingdom in another world? Was all of it a dream? Did Sam really imagine a wise old magician, a cranky but loyal bird, a beautiful bossy princess, and the Sand Stone itself, whose power Sam alone could wield? That can't be true. But if the magical world of Ebdyrza and all of Sam's memories are real, then there really is an Enchanter's War, too. And the Enchanters may end up in Sam's world seeking to destroy the Sand Stone, and Sam with it.