New Heirloom Ring from Event in The War Within
The War Within data includes an interesting addition: a new heirloom ring. The data indicates that it will be a reward from the pre-expansion patch event or a new World Event present in Khaz Algar.
It seems like this new heirloom will be similar to Dragonflight when you could obtain Unstable Elemental Confluence during pre-patch and still during the expansion.
The ring is created using Lifeless Stone Ring, which casts Infuse Memories. This spell requires three reagents: