Dear Bungie,
Please explain why you created a curated roll for a weapon that could only be attained from completing a grindy and challenging triumph, only to turn around 3 months later and offer the exact same drop as a random reward to anyone regardless of whether they completed the triumph or not. Just take a second to imagine how it feels to be the person who spent 15+ hours that week slogging through Iron Banner with burden on to get that reward only to have it be wasted time and effort. Stop making these quests if you are going to hand out the rewards at random in a couple months.
Sincerely,
A butt hurt owner of your "curated" wizened rebuke and heavy as death emblem
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I believe they removed the whole Iron Burden/Wolves Favor system so they probably just released them into the wild.