That seems pretty unlucky!
I’ve done almost exactly 904 and have gotten six - I fed two, I think. I admit that the 2x drop rate helped a lot to farm two morning stars - I also farmed two fire dblades.
There were some people on reddit posting screens showing their vaults with ~6 fire dblades or ~6 morning stars during the event. At least to me those had a high probability of being photoshopped, since I was tired as fuck of farming those dungeons non-stop to get only two of each. My eyes would melt and I would’ve certainly gone insane in front of my computer if I tried to get that much.
SOoo excited!!!
