Drathan

From Qwiki

Drathan is a malevolent wizard whose skill and knowledge of Moridian magic is unparalleled in the world. He has dedicated his life to the pursuit of every arcane secret he can find is one of few wizards ever to walk to face of Moridia who is capable of creating entirely new magics due to his deep knowledge and understanding of the laws which govern magic.

In his lifetime, Drathan has created some of the most wicked and disturbing magical effects ever unleashed upon the world. One of his most brilliant discoveries led him to be able to travel between Moridia and modern-day Earth. The effects of that bit on conjuring will echo throughout the multiverse for many years to come.