Ars Diavoli is a black metal band formed in Portugal by multi-instrumentalist and sole member Villkacis in 2005. The first Ars Diavoli release was the Black Throne of Disease split with fellow Portuguese bands Irae, Penitência and Thy Black Blood, followed in the same year with first demo The Absence of Light. In 2008, Ars Diavoli released first full length Pro Nihilo Esse on Debemur Morti productions.