Did the dungeon twice and got the same loot except I didn’t get any moonfang armor
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when you do the dungeon for the first time each week, you can get new gear you haven't earned before. subsequent runs in the same week can earn you gear that's already dropped for you in the dungeon. moonfang armor is on a weekly rotation (5 weeks for the whole set), the armor is also bugged and will get sent to the postmaster, so check there after each run. I hope this helps