You can additionally get the Level release for your own base and then invite your 6 Blissey trainer base owners to join your team or be your friend and you can fight them a second time per day in your own base, then tell them you don’t want to be friends anymore and send them home so you can repeat the whole process…

You can also go through the process of getting the Level Restriction removal machine for your own base, and after defeating them ask them to join your team and you will be able to battle them a second time per day in your base. So you can actually battle 12 Blissey Trainers per day, 6 at their bases and 6 more in your…