I was just considering how they decided to make one of the special "Winner's Path" Pokemon a Duskull with Imprison. Considering the Winner's Path gave strong Pokemon with useful moves (Trick Room for Bronzong and Physical Flying STAB for Gyarados) why did they give Dusknoir Imprison? I'm certainly no expert in competitive baattling, but Imprison seems pretty useless to me. What are the odds you're going to encounter a Pokemon with the same moves as you?
So my question is, does Imprison actually have any use, or is it just a waster of a moveslot?