Automaton's Rise

Aaron and Bethany were running through the woods only to be stopped by an automaton. Aaron slowly tries to back away, but he steps on a twig He immediately pulls out his dagger and runs toward the automaton. Bethany takes out her staff and yells at Aaron to move. She was a mage, and assuming the automaton is electric, she throws a ball of water at the automaton. The automaton is gone. They start to move forward, but a shadow crawls over bother Aaron and Bethany. They turned around and there was an automaton, but this one was ten feet tall with army of Automaton's behind it. Bethany and Aaron stare in horror. What had caused this? Aaron and Bethany turned, and ran, never to be seen by any human again.