Bloom Filter Game

This one is basically a mechanic of using hash collisions in a bloom filter. Every turn there's some sort of "hash function" like "Grain goes into slots 1,4,6"

Something changes that.

Then, you can also use that to test for existence of something:

So, basically, I'm using a magic hash function and my magic bloom-filter-bag-of-holding to transmute materials from one type to another.

Maybe there's a deck of hashes, and you draw into a queue of 3, and relace at the end of the queue. That way you can play wheat now knowing that two turns from now you can exchange it for gold.