This is a fantastic deck, which is pretty good against most decks, there are good options for attack and defense here.
Deck:
Strategy
The idea behind this deck is that you will smash your opponents towers over time using the Royal Giant. Usually you can start as soon as your elixir gets to 10 by throwing the Royal Giant, then behind it the Furnace or the Princess.
If you don't have the Royal Giant in your first five cards then just place the Mega Minion or the Knight in either the bottom right or left corner, depending on where you intend to place the Royal Giant.
Beware, this expensive initial push is very vulnerable to a counter attack, so you will get some losses with it. However this is my person current favourite deck and easily keeps me above 3000 trophies.