[2020] What are some cool ideas for Relics in Leagues?

As the team is slowly starting the work with the second League, designing Relics is of course an important part of the job.

Small disclaimer: Without any sort of commitments or promises, I would just like to hear what cool ideas you have to share. I always enjoy reading your suggestions and creative ideas for this kind of stuff, so please share!

It doesn't have to be a finished Relic either, could just be fun mechanics/effects you think would be exciting to try.

EDIT: Slowly reading through all of the replies. Abolutely love to see all your creative suggestions and ideas, it gives us a better understanding of what interests and excites you. Big thanks, you clearly put lots of effort and work into this so I can't thank you enough. Lots of love <3