So, let's assume there was a mode where there were no buildings, and enemies would both drop their troops in an arena for them to attack each other instead of a base. Let's say it's the same map that currently houses the base, but with a line down the middle. You have to drop your troops on one side of the line, the enemy has to drop their troops on the other side. You can drop your troops whenever you want, the 3 minute cap remains, and current troop/spell capacity remains (except let's say no Poison).

So, what troop/spell composition would you take into such a "war"? Heavy on Valks to deal mad splash damage? All air troops to render enemy BK/PEKKA/Golem useless? What do you think!