So, balloons won't be a defence all on their own, you would have to attach them to buildings and then they would lift the buildings in the air so only troops that can target the air can damage them. Some exceptions: town halls can't be ballooned, neither can inferno towers or teslas or storages. NOTE: buildings that are ballooned can still be affected by spells, and hog riders can't reach these buildings.
They would basically look like four balloons tied to the corners of your chosen building. If all buildings but the buildings in the air have been destroyed, the balloons pop and the building falls and gets destroyed automatically. They way you use it is that you just drag it onto the building you want to ballon, and the building merges with the balloon. If you balloon a cannon or a mortar, they still can't shoot air troops, if they could it would be OP.
stats:
cost: 1 million gold
unlocked one at town hall lvl 7, and a second one at town hall lvl 9
health points: none, it gets destroyed at the same time as the building it's attached to gets destroyed.
dps: none
Let me know what you think, and how I can make my idea better.



