Megadeth’s David Ellefson has premiered a lyric video for his new song “Hammer Comes Down.“ The track features a number of guests including: Ellefson’s business partner Thom Hazaert, Eric “A.K.” Knutson (Flotsam And Jetsam), Mark Tremonti (Alter Bridge, etc.), Chris Poland (ex-Megadeth), Joey Radziwill (Sacred Reich), and Dave McClain (Sacred Reich, ex-Machine Head). The song…