(I know the textures are simple/ugly, no need to say)
Any suggestions, I recommend that you send them to my Discord server, which does not mean that the comments will not be seen.
With this add-on, amethyst's *future*-altering properties will be activated when fused with glass. (Tinted Glass)
Using amethyst shards and twigs, create a prophecy stand where you can place tinted glass to gain insight into the future. Just interact with the empty hand and, if there is glass (which is also placed with interaction), it will open a screen to choose the player whose future will be seen. Then interact again with the empty hand to get the glass with the prophecy written on it (There are 9 of them currently, but it can increase with new ideas).
Now with iron ingots and amethyst shard, craft a prophecy stand that you can place the glass with the prediction (Requires the affected player to be in the world). This player will receive a message and will be able to use a compass to obtain the coordinates of all the prophecies that affect and are in the same dimension.
Only the person who is affected by the prophecy can break it and if they don't, at a random moment the event will be triggered and that's when things get fun.
Since the sentences are ambiguous, being good or bad is decided at the time of the event (to avoid good/bad event farming) so be prepared if things don't go as you wanted.

