62. The key itself does not open any door. But it has a loop on the end, and if you hold that to your eye you can see into the past of the place where you are standing.
I kind of want to run a campaign of capers, schemes, and heists, ending up with the PCs breaking into the Vault of Heaven and dealing with all sorts of celestials. And not bad guy PCs. CG and N and CN PCs.