I rip up the contracts that say you own the hill. I then write my own out of a diamond slab. I then go over to the grounds keeper of the hill and tell him you died and that he must sign the new deed to me. He doesn't believe you died, so I forget the whole deal.
-30 years later-
I go back in time with my self-designed time machine and tell him that I come from the future, and that if he doesn't sign the diamond slab, I'd kill his children in the future. He signs it.
My
Hill.