What you were expecting to happen, and what actually happened?
Used Soothsayer when there was no purple gems, game doesnt give me any chance to go back.
I thought I was not allowed to use him at all when there was no purple gems.
What are the steps to make it happen again?
Use him again when its no purple gems on the table.
Do you have any screenshots or video you want to share with us so we can see the problem? Attach them to your post!