It will make you powerful. But it will also make you weak. Your prowess in combat will be beyond any mortal's, but your weaknesses, your failings will increase as well." You mean I'll have a bad heel?" I said. "Couldn't I just, like, wear something besides sandals? No offense.
Rick RiordanZia turned toward us, her expression grim. โI will show you to your quarters. In the morning, your testing begins. We will see what magic you know, and how you know it.โ I wasnโt sure what she meant by that, but I exchanged an uneasy look with Sadie. โSounds fun,โ Sadie ventured. โAnd it we fail this test?โ Zia regarded her coldly. โThis is not the sort of test you fail, Sadie Kane. You pass or you die.
Rick RiordanWhen Luke had descended into the River Styx, he would've had to focus on something important that would hold him to his mortal life. Otherwise he would've dissolved. I had seen Annabeth, and I had a feeling he had too. He had pictured that scene Hestia showed meโof himself in the good old days with Thalia and Annabeth, when he promised they would be a family. Hurting Annabeth in battle had shocked him into remembering that promise. It had allowed his mortal conscience to take over again, and defeat Kronos. His weak spotโhis Achilles heelโhad saved us all
Rick Riordan