Dragon Emperor7 books in series
Dragon Emperor Publisher's Summary
Evan was just an average guy working as an EMT, but when he puts on an ancient dragon mask, he’s teleported to the magical world of Inati as a powerful black dragon.
Now, he’ll have to save a beautiful priestess, rebuild a broken city, and fight a horde of zombie-like monsters led by an ancient demonic evil.
If he wins, then the opportunity to build his powers, treasure horde, and empire will await him. If he loses, then his new friends will all suffer fates worse than death.