Members of Testament, Exodus, Death Angel, Forbidden, Mordred, Vio-Lence and more will play a special benefit show for Vio-Lence’s Sean Killian, who was diagnosed with stage four liver cirrhosis. The event, which is called “Killian On Command: An Evening Of Vio-Lence,” will take place on January 20 at the Oakland Metro Operahouse in Oakland, California,…