2013's Warbringer IV: Empires Collapse showcased the band aiming to diversify their sound and taking chances by expanding boundaries by continuing to bring in more influences from black metal to punk to industrial in a overall more experimental and free effort that was initially met with mixed reactions but has become a favorite amongst many in the band's fanbase. Continuing to work with producer Steve Evetts (Sepultura, Hatebreed, Symphony X) the band opted for a different mix and enlisted Brett Eliason (Pearl Jam, Avenged Sevenfold) who brought a cleaner and different approach to the traditional thrash band. Staples include "The Turning of the Gears," "Hunter-Seeker," "Black Sun, Black Moon" and the epic "Towers of the Serpent." The reissue adds the band's take on the Led Zeppelin classic "Communication Breakdown."