Unfortunately is a small Minecraft mod for 1.15 with Fabric.
It adds a Crystal Ball (craft with obsidian, a stick, and a purple stained glass). It's the workstation for the Fortune Teller villager. They can tell you what will happen in your future (for a small fee, of course). Might be good, might be bad. Maybe you'll regret knowing...
I would write more in the description here, but I don't want to spoil the magic! :)
This is a fairly work-in-progress mod and the things it's able to tell about your future aren't too exciting yet. I'll hopefully find some time to flesh out the concept later.
LGPL v3 or later.