Garchomp - The Outrage Sweeper
You will need to breed with a Dragonite, Haxorus, Druddigion, Hydreigon, and Goodra with the move "Outrage", because they learn this move by leveling up, which is what Garchomp can't. If you play OR/AS, you can just go to the battle resort, go to the second tutor, tutor outrage to your current Garchomp. It costs 16BP.
Garchomp @ Persim Berry - To avoid confusion after using outrage 2 or 3 times in a row.
Adamant Nature (+Atk -SpA) You will need this nature. You don't need SpA
Trait: Sand Veil/Rough Skin
EVs: 252 Atk/252 Spa/4 HP
-Outrage - Strongest Dragon type move ever
-Earthquake - Obvious Reasons that its the best move
-Iron Tail/Iron Head - Iron tail and Hone Claws match up. Iron Head and Swords dance match up.
-Hone Claws/Swords Dance