[quote=TheUnknowable]
Except, as the first post said, Cronos no longer had the strength in our present to do it. I suppose he could have sent Dracula back in the 1500s or 1600s, when the Renascence revived interest in ancient greek culture and he would have a little strength. You'd need a good reason for him to help you, though. Revenge might work, as Jesus was responsible for his downfall.And "god of magic" seems more like he helps mortals with powers. If he had dominion over all magic, ie. domain over god powers, he'd be on par with Odin.Travel might work, but it would take a lot of energy to travel so far into the past.Also, I thought Hecate was goddess of magic?Well, in the case of demigods like Heracles, the "god-fetus" came from sometimes asexually reproducing deity Zeus (as happened with Athena). It could be made to work, but you could also say his "Mom" merely taught him magic (in the form of stat buffs or something) and then he learned to tap into belief/prayer as a power source.

Also, the Muslims during the Middle Ages, researched the Greeks/Romans a lot during earlier centuries than the 1400's and 1500's. 
[/quote]

Magic, in the European Tradition, is like Martial Arts, there are many strands. Hermes was a god of magic, just as Hecate was the goddess of witchcraft, and maybe magic in general. For a non-Greek goddess the Greeks believed in, she was arguably the most powerful, so they had a smear compaign against her, turning her into the stereo typical witch.