Dragon Rush TH7

Ten Dragons is the single most famous army in Clash of Clans, and Town Hall 7 is where it is strongest relative to what defends against it - most bases here have two Air Defences and nothing else that threatens a Dragon. Drop all ten in a line along one side, not in a clump. Rage them once they are through the wall. If you can reach an Air Defence with paired Lightning, take it before you start.