Lin Carter 
Kellory the Warlock [EPUB ebook] 

Kellory — the last of the Black Wolves, sole descendant of the Lost Kings of Illyrion. His fighting arm maimed, his homeland stolen, his tribe mercilessly slaughtered by the dread Thungoda Horde, he seeks revenge with the only weapon left to him — sorcery. But the secret arts of witchcraft are not easily surrendered by the Brotherhood of Darkness…

Across the Sea of Sand, with its plethora of terrifying spells and whispering spirits of the night, Kellory seeks the Grimoire of Yaohim — the Book of Shadows — for only within its enigmatic pages will he find the sacred magic that will vanquish his enemies, if he can decipher its mystery before it’s too late…