If a person cast no shadow at all, he couldn't be alive. His existence became meaningless.Execrating Apophis by destroying his shadow would cut his connection to the mortal world completely. He'd never be able to rise again. I finally understood why he'd been so anxious to burn Setne's scrolls, and he was afraid of this spell. (Carter Kane)
Rick RiordanThe real story of the Fleece: there were these two children of Zeus, Cadmus and Europa, okay? They were about to get offered up as human sacrifices, when they prayed to Zeus to save them. So Zeus sent this magical flying ram with golden wool, which picked them up in Greece and carried them all the way to Colchis in Asia Minor. Well, actually it carried Cadmus. Europa fell off and died along the way, but that's not important." "It was probably important to her.
Rick Riordan