What is "terroreign"

Terroreign (Apocalyptic Armageddon Command) is the sixth studio album by Singaporean black metal band Impiety, released in 2009 through Agonia Records. The album is made available as regular jewel case, limited edition digipak with sticker and vinyl. The latter is pressed to 750 limited copies; 100 on white, 400 on regular black LP and the rest 250 copies as picture disc. All vinyl version comes with an A3 landscape poster of Impiety, with some bearing Shyaithan's signature. Both Intro and Outro are composed and performed by Nuclear Holocausto Vengeance of Beherit.