Yeah the RNG sucks, but at the same time, you are supposed to do more than use just weekly engrams (not that I disagree with you at all, because I definitely got 5 dang colony's in a row the other week... you never get exotics from weeklies or engrams, here's 5 in a row, oh but they are all the same dang thing) I.e. run normal Nightfall -> hope for light gain -> run prestige Nightfall for power engram for hopefully more gains Same with Raids: Normal Raid for gains -> Prestige for gains For Leviathan specifically, you can skip Castellum until just before calus, in the event you gain levels from drops from the first 3 encounters, then your power engram from castellum will be higher. Also use your keys at the end of your weekly grind fest for higher engrams from the chests in the underbelly. I mean it's a crappy grind, but there are ways to maximize your gains, and weekly engrams aren't really it :( if you can get past the jumping puzzle in Eater of worlds, you can get 2 powerful engrams before Argos If you can pass the first part of Spire of Stars you can get 3+ power engrams/drops before the boss Last but not least, don't redeem your weekly engrams as soon as you get them. wait until your fed up with Bungie for the week and have done all the previously listed crap, then get your weeklies. The weeklies will increase in power as you gain levels through the week. All that said, none of this will help with crap RNG.