very very rare, ive played about 800-900 hundred games, ive received one exotic and that was during iron banner, it was TLW, and I think it was the week after xur had sold it. legendaries are pretty rare too, ive had about 2 in 300 games, one of those turned into 2 energies lol On the plus side you do get lots of blues, and these blues are very good for crucible because of the level cap. im still wearing a rare chest piece as its giving me 117 intellect, havent found anything better yet, I think only a raid piece could match that. blue weapons are ok, ive got a green sniper rifle, fastest fire rate ive seen, faster than preadyths revenge, nice sights too. a lot of people get dropped awesome stuff but ignore it because its blue or green, the drop rate is really high for this stuff