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Stoner metal is a highly codified genre. It’s expected to be slow and brooding, with references to evil women and freaky pagan practices. That’s pretty much what Swedish quartet Witchcraft delivers. But unlike its more abrasive contemporaries, the band sticks to the blues-derived wallowing of original architect Black Sabbath—and not just the later stuff, either: Witchcraft seems especially enamored with Sabbath’s first album, when Ozzy’s wail was earthy and troubled and the riffs were primal thunder. Vocalist and guitarist Magnus Pelander leads the group through stygian arrangements that, while offering nothing new, possess enough of that ol’ black magic to weave a heady spell. You might not remember the details once the bong smoke clears, but you will know you’ve been rocked. Witchcraft performs with…And You Will Know Us By the Trail of Dead and Saviours at 8 p.m. at the Black Cat, 1811 14th St. NW. $12. (202) 667-7960.