13 was just mental. *goes to Wiki to remember*
Tyler The Creator
Ghostface Killah with that frankly brilliant album Twelve Reasons To Dies
Chance The Rapper
J. Cole (boy did he fuck up releasing Born Sinner the same day as Yeezus)
First Freddie Gibbs album
All released an album in 2013, and pretty much all of those were solid gold. Crazy year.
Down with this sort of thing.