A nullifier is the public proof that a shielded note was spent. It reveals nothing about which note, or whose. 888 pixel characters built on that idea, and held the same way.
1 of 888 seats claimed. Free, and it takes two fields.
Fixed. Generated from a published seed.
Shielded assets, once ZSA activates.
You pay the network fee, nothing else.
Mythic down to Common, counts fixed up front.