An Infinite Loop in the Game Dominion

I managed to construct an infinite loop in Dominion: I am going to break the infinite loop, but you can see in the attached that my turn will last infinitely long if I keep using the 'Shepherd' function that I attached to Estates with Inheritance.

Also, I am almost guaranteed mathematically to be able to do this every turn (and get a Province if I choose to stop); this probability does lessen slightly with each new Province that I acquire. I also pick up a new Estate every turn by using my Hill Fort.