Best HIp-Hop supergroup?

this is not about rappers that came into the game as a group, but rappers who came into the game independently and hooked up with other rappers they got along with to create dopeness....duo's also accepatable

i gave Blackstar a * simply because it was a debate if they came out as a solo artist or as a group initially......i feel they were solo artist, who just dropped their debut albums after their supergroup album cuz of all the buzz they were getting together