Sentencing Francesco John Prevete to at least 23 years in prison, the judge at Mold Crown Court said: "you carried out a brutal and ferocious attack on Craig Maddocks.”
Prevete showed no emotion as the sentence was passed.
Mr Justice Jeremy Baker detailed the injuries inflicted by more than 50 stab wounds, causing "a significant degree of mental and physical suffering”.
He said the victim would have been “conscious of what you were doing to him.”
The judge said that there was evidence that Mr Maddocks’ use of cocaine meant that he owed people money, including £300 to Prevete's father - and that Prevete decided to punish him.
He denied murder during the trial, and Mr Justice Jeremy Baker said: “Because of your claim to have no knowledge of the offence, it may never be known with certainty what lay behind your decision to kill him."
More top news
Wales head coach Rob Howley admitted his side's performance 'simply wasn't good enough' against Scotland this afternoon.
It will be cloudy with outbreaks of rain at first, but most of the rain will clear by morning.
Despite leading at half time, Howley's men failed to score in the second half with Scotland racking up 20 points to seal the win.