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Far World: Water Keep (edition 2008)
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Wikipedia in English
Amazon.com Product Description (ISBN 159038962X, Hardcover)Other people may see thirteen-year-old Marcus Kanenas as an outcast and a nobody, but he sees himself as a survivor and a dreamer. In fact, his favorite dream is of a world far away, a world where magic is as common as air, where animals tell jokes and trees beg people to pick their fruit. He even has a name for this place- Farworld.
When Marcus magically travels to Farworld, he meets Kyja, a girl without magic in a world where spells, charms, and potions are everywhere, and Master Therapass, a master wizard who has kept a secret hidden for thirteen years, a secret that could change the fate of two worlds.
But the Dark Circle has learned of Master Therapass's secret and their evil influence and power are growing. Farworld's only hope is for Marcus and Kyja to find the mythical Elementals- water, land, air and fire- and convince them to open a drift between the worlds.
As Kyja and Marcus travel to Water Keep, they must face the worst the evil Dark Circle can throw at them- Summoners, who can command the living and the dead; Unmakers, invisible creatures that can destroy both body and soul; and dark mages known as Thrathkin S'Bae.
Along the way, Marcus and Kyja will discover the truth about their own heritage, the strength of their friendship, and the depths of their unique powers.
(retrieved from Amazon Mon, 30 Sep 2013 13:56:54 -0400)
Found in the desert as a baby by monks who named him, thirteen-year-old Marcus, who has been confined to a wheelchair ever since he can remember, knows nothing of his background and endures the difficulties of his daily life in various foster homes and schools by dreaming of Farworld, a magical place whose pull seems to be getting increasingly stronger.
(summary from another edition)