Doom Of The Darksword by Margaret Weis

In a society where everyone’s worth and daily functioning depend on magic, a young man who was born without any power becomes the unexpected fulcrum of a rebellion; wielding a legendary weapon that can cut through enchantment, he uncovers long-buried truths about the nature of the world and the immortals who rule it, forges uneasy alliances, and faces devastating choices as he seeks to end a corrupt order and remake his people’s destiny.

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