Obsidian Mantra is a talented group out of Kwilcz, Poland. They play a heavy brand of progressive death metal that they reference back to groups like Meshuggah, Gorguts, and Opeth. As detailed on their bandcamp page, their sound "is based on uncommon time signatures, where groove-oriented parts meet twisted melodies, and black metal and experimental influences coexist with some atmospheric elements." I was a little skeptical at first, but the deeper into the album I got, the better the material I found. Stream and purchase their latest album Existential Gravity below. You can also find them on Facebook HERE.