After killing Ir Yut in the challenge I received a drop (in the list of icons that appear for all the loot you get), and I can't remember the actual name of it, but it was something about the Worm. It's icon looked like a spiders egg but with a black core. I had never seen it before so I went into my inventory to check and it wasn't there, not an artifact or even a consumable. If anyone knows what I'm talking about let me know, I'm mainly just curious because I went on the wiki and looked at all the loot for the new Crota raid and nothing named "something of the Worm" came up