Originally posted by jonnin:

I too wonder what you think is rare? Cores and tissue and SB shards are RNG. All those are a few and done though. Everything else is fairly plentiful. Not enough mines.

Cores are scary. We exhausted a medium biome and got 8 cores. We are in the last biome that we know of, and if we don't get enough. We'll have to just sail and hope.

Marble is in high demand. I think if you play solo, you'll be pretty good on this. But bigger groups/builds makes it percious. We don't throw any.

Tissue wasn't an issue. I suppose eventually you get it all. I don't doubt we will. But it has been more of a note worthy hunt than any other resource. Maybe not "rare" exactly.