2. Abra Kadabra
A time traveller from the 64th century, who went into the 20th, where he used his advanced technology to pretend that he had magical powers, becoming a recurring Flash enemy. The studio might want to use this villain, to try and pre-empt Marvel using their own time-travelling villain Kang, for Avengers 3. There could also be the reveal half-way through, of the principle of Arthur C. Clarke's third law, about how if technology is advanced enough, it can be indistinguishable from magic.