Nightfall exclusives are a mix of drop protection and tiers (30, 110?, ???, 200k). Do a nightfall card with with whatever singe you want blackout, momentum, match game, and bump it up to 7.0. Get your quick 200k. *You only have to reach this score once to enable the higher drop rate* Now you can run it on loop at 750 and in combination with the drop protection you'll probably have it in 3 to 5 runs. This info is sourced from two patch notes and what I've used to get pretty much every nightfall exclusive already big quick.