Practice mode.. with a catch

so everyone wants the idea of a practice mode in clash of clans. this would improve your attacking and your defenses.
I agree that they should include this in the game, but to enter practice mode, you would have to have troops in your army camp. this means you would have to pay for an army to go against yourself in practice mode so it actually costs something.

As long as I don't lose troops, I'm cool with it. Maybe instead of waiting for the troops to train, you can just choose troops before, pay for them, then practice with them. That's a good way to do it IMO

This has already been ruled out