If an air defense seems to be killing off a lot of them drop a rage or heal spell to the closet hoard of dragons to the defense in order to ensure they destroy it before it can do anymore damage. Step Five: Watch the dragons go around the base. As soon as your dragons are touched down, drop 2 rage spells right next to each other so the dragons can knock out lots of buildings in the beginning. Step Four: Place all your dragons down in a line from the side you have chosen to attack from. You want to knock out the air defense first, so they aren’t dragging your dragons down later in the raid. This is the side you will be attacking from. Step Three: Once you have found you base, check which side the air defense is more concentrated on or is more upgraded. It is not worth wasting your entire army for just 15 trophies. If it has less than 27 trophies DO NOT ATTACK. Step Two: Check to see how many trophies this base has. Make sure they have air defense (if possible on the outside of the base) and if the base has x-bows check if they are pointing at the ground. Step One: To guarantee this strategy will work you will need to find a town hall either the same or below yours. Usually, this strategy is only used for pushing as it is highly expensive and takes a long time to train.
In my opinion this is the only strategy that can 3 star a town hall 2 above you. The Mass Dragon strategy is one of the more popular pushing strategies for the higher town hall levels.