A wannabe Bronx rapper horrifically beat a cat to death in ritualistic sacrifice to Satan and posted about it on social media to promote his small-time music career, police and sources said.

Fordham North resident David Mosley, 26 — who goes by the alias Church of Ububal — was arrested Thursday for killing the kitty, law enforcement sources said, after boasting in a YouTube rant that he was inspired by a Norwegian black metal band whose bassist “literally murdered” another member of his band, an apparent reference to the band Mayhem.

Church of Ububal — which is “Labubu” backwards — boasted about the Devil-worshipping sacrifice to hype his upcoming rap album rollout in the days prior to his arrest and went berserk on a Post reporter and photographer who approached him in his building Wedn

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