Blue ADVANCED paradox amplifiers...which I believe OP is referring to, are hard to get. The green ones are easy. But I made a post yesterday about the blue ones. Played 5 Heroic Strikes and 50 crucible matches and I got one blue "Advanced Paradox amplifier" to drop. ONE! And you need 2 to 3 of them for some of the prophecies. And if you're only getting greens, you need 10 greens to get a blue.... so if you need 3 for a prophecy, that's 30 f_cking strikes or crucible matches! OP, I share your frustration. I enjoy the grind... But 1 item in 50 games/matches... that's a bit much... even in Bungie standards.