The Elixir of Ice

The elixir of ice made crystals in Alicia's blood and other body fluids so she couldn't run as fast as she used to, or swing her sword as well. Joshua could move the same way if he tensed all his muscles painfully. It was some time before they found the blue potion that poured from the mouth of a gargoyle who looked like Alicia but with horns and healthy wings.