When Arthur realized that he couldn't keep running away, he rose high up into the sky, turned back for a brief moment, and then threw his hammer at Green Viper.
The black hammer flared suddenly with a violet brilliance of lightning and streaked through the air towards Green Viper like a bolt of lightning.
Green Viper was already furious by the turn of events. He couldn't believe that he had to succumb to chasing Arthur, not to beat him up but in order to avoid a nasty defeat.
So when the hammer flew towards him, he didn't hesitate at all to strike it down. He let all of his pent-up anger find an outlet through his fist. Even the pressure compressing him from his armor finally got somewhere to be released.
His hand was protected by a gauntlet, so he wasn't afraid of smashing it into the hammer. But when the hammer got close to him, a force emanated from it that pushed his hand away.
