The Vow catalyst quest is not progressed by doing nightfalls. WTF?
The whole cat quest progression system is a bad joke. I need 400 (!) strikes / gambit / crucible matches just to obtain this cat. This is -blam!-.
The drop rate for cats from strikes / nightfalls also is a shame.
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that is normal The catalyst also says that you have to do Strikes, Gambit or Crucible There is nothing there about Nightfalls Including nightfalls for the catalyst quest came later