Op please update your post... Once you have a locked in set amount of buffs 1 or all 5 you [b]CANNOT[/b] receive any more. I have been playing solely on my Warlock for 2 days as im trying to max out my subclasses (for the 3rd time) and have only had my original 2 which i got from a friend on patrol (have tried crucible, private matches, strikes etc.... cannot get more then my original 2). Also... the buffs do not stack... my self with 2, was receiving the same rep as my buddies with 5. Now there may be a hidden buff ie: splendor yellow may have increased exotic drop rate or purple increased legendary and so on. But this is not confirmed at all....