Well it might be strang to bring hogs in a dragon attack but if done properly it will be a really easy three star.
Step 1: Send a cc full of max hogs and 4 of your own at the bottom archer tower. After it is done, they will attack the air d and take it out.
Step 2: Lightning on any of the other air d's. Both are equally exposed.
Step 3: Swarm drags on the side closest to the remaining air d. Spread the drags out so if the cc has wizards they all don't get taken out at once( aaaand yes that can happen

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