You realize, but you don't know how, that you had karate, and other
training in the martial arts. So you use this to your advantage.
When the Orc nearest you swings you flip backwards and you remember
all of the training in Japan you had at the different dojos, and the
power that you attained. You hit the orc with an ancient spell and
the orc turns into a human. He falls to the floor, and the other orc
seeing this turns around and runs away in haste, after seeing the
magical feets you just performed.