I find doing the quest to get Eriana's Vow Catalyst is a huge waste of time because even after all the strikes I've done even with the boosters I still have only 1% of progress and I'm well over 100 whatever season rank also. Bungie needs to increase the amount of progress earned exponentially or just make the catalyst drop from a nightfall which would preferably be better.
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If a player likes Eriana's Vow, then the catalyst is not a waste of time. It's a definite boost to the weapon that improves it's natural usage and works well with the playstyles of the weapon. The progress gain on the quest is definitely tedious, maybe unnecessarily. It probably could have had a complimentary system where usage and kills against powerful enemies/champions/guardians provided boosted progress as well. Why Ordeals did not count for Strikes is also a mystery.