Elvenblood (Hardcover, Turtleback School & Library ed.)

Elvenblood... To spill it was to invite terrible vengeance, as Shana, also known as the Elvenbane, had already discovered. She had been born into a world with one simple law - obey the elven lords, or be destroyed. Those elvenborn who had the strongest magic and pure elvenblood ruled all others: humans, halfbloods, and even elves of weaker magic, mere slaves who lived or died at the whim and fancy of their masters. Now change is in the wind, and what began with Shana's struggle has spread to become a rebellion of all the oppressed across the land.... If they could rise as one, the elven lords would be far outnumbered. But even so, none who would fight the lords are able to withstand their might. Their common cause must find in the elven masters some weakness, an Achilles' heel in the armor of their magical supremacy.