You should be able to have someone complete ancients in your game at level 20, and then you will be able to "Bump" the game. I could be wrong... but this is how it worked in the past as far as I can recall.
Edit: I'm not sure if you need to stay away from ancients prior to bumping, but I would suggest saving them until you've encountered someone who needs a bumper just to be safe. The rusher should have no issues doing ancients
This post was edited by OverDoSex on Oct 13 2018 01:26am