@Claud601 and @sam the dnb man . Please. Pretty please. Slipknot is heavy, yes. But comparing Slipknot with Taake or any other BLACK METAL band is stupid.
Different genres, different styles, different philosophies. Black Metal isn't made to be heavy. It's made to glorify Satan. And it's most original form, is to be formless. Is to stand out of musical rules, is to use inharmonic sounds.
Slipknot plays guitars on minor scales with drop B tuning. Black metal bands play on guts attached to a oak stick, on that very weird scale no one knows about with dripping blood tuning.