Murda Ma$e is back. Shortly after celebrating the 20th anniversary of Harlem World, the New York rhymer unleashes “The Oracle,” a 4-minute-long scathing diss track aimed at former friend Cam’ron.

Over JAY-Z’s “Blueprint²,” Ma$e delivers scorching bars about his former collaborator.

“Imagine 20 years with a bitter bitch and same the drama,” he raps. “Dame told you do this shit, you don’t see Dame’s karma? / K-9 on your ass with no distraction / Pussy ni**a wearin’ pink, guess he think he matchin’.”

Ma$e went on to reiterate snitching allegations made against Cam, and even referenced a 2005 shooting.

“Tax know you as the ni**a that snitched on the Roc,” he raps. “D.C. Crips know you as the ni**a they shot / O.G. ni**as don’t have no history with you on the block / And everybody seen the footage I got.”

Continuing the barrage of insults, Ma$e accused Cam’ron of incest

(“Ever since 10, you was a thirsty ni**a / I ain’t gon’ talk about the time you fu**ed your sister”) and raps about his tattoos (“I’m done rapping with you / You’ll always be my bitch, you got my fuckin’ name tatted on you”).

Killa Cam and Murda Ma$e have a long history together. The childhood friends formed Children of the Corn, a rap group featuring Big L, Herb McGruff, and Bloodshed, before collaborating on a series of songs throughout their careers. Both have matching Harlem World tattoos. But the song makes it clear that those ties are in the past.

“Ain’t no unity,” he raps. “Ain’t no Children of the Corn, ain’t no you and me / Any ni**a ever got Diplomat immunity / Was ni**as who ratted or wanna snitch on their community.”

It’s unclear exactly what prompted Ma$e to release the diss track, but the beef has been bubbling for some time. In March, Cam’ron accused his former collaborator of turning to church in order to avoid problems in the streets.

“Mase wasn’t coming outside,” he said. “That shit just got a little aggressive. You go triple platinum, shit’s gonna get aggressive.”

On his more recent song “It’s Killa” off The Program, Cam rapped:

“Told him straight up I ain’t feeling him / Let me curve this ni**a ‘fore I end up killing him.” Seemingly in direct response, Ma$e raps: “It’s Ma$e, ni**a, I invented the curve.” Upon the song’s release, Murda took to Instagram to write: “THIS IS ALL I HAVE TO SAY!”