I saw some great ideas of the combo Rocket + The Log in the comment section, I decided to gave it a try and got lots of great results. This deck is working extremely well as the Rocket is a surprising card in the current meta game. This is a very funny deck indeed!
Rocket Log Deck
It is extremely nice to Rocket either Sparky or Bowler (very popular these days) and the Tower nearby to deal 500+ damage to it. Rocket is also very useful at dealing with 3 Musketeers and Hut Deck, which is getting used more now in Arena 9+. Also, you can Rocket the Elixir Collector any time!
I use The Log on defense most of the time. The Log pushes back most ground troops in game and buy the Furnace some extra seconds to spawn the new Fire Spirit wave. The Log can easily ruin a Hog Rider push by push all troops back while killing Goblins, Fire Spirits… It is also extremely useful at dealing with Witch and Princess. Sometimes, The Log can be used on offense when I have the huge Elixir advantage.
Barbarians are an very popular card in Clash Royale due to the huge advantage it offers. Barbarians can easily stop Hog Rider (place them 2 tiles in front of your Tower when the Hog is about to cross the river) and the following support troops. Barbarians are also great at dealing with Royal Giant and Sparky. Barbarians + Furnace is such a great defensive combination.
Musketeer is super versatile. She shoots down Balloon, Baby Dragon, Lava Hound… quickly and strengthens your counterpush afar. She can also deal hundreds of damage to any unprotected Tower.
Ice Wizard is such a great card to slow down any push insanely, extremely useful at dealing with Royal Giant, Giant, Hog Rider… Couple him with Barbarians to deal with any beefy target or with The Log to deal with weaker targets.
Hog Rider makes this deck more interchangeable as he is very quick for counterpushes. Yes, I use him for the counterpush most of the time. Sometimes I couple him with Fire Spirits for a small big push and then prepare for defense. You can somehow replace Hog Rider with Miner or Giant!
Furnace is very popular at the moment in Arena 8+. Great for distracting Hog Rider, Giant, Royal Giant. Furnace is also a great defensive building which help you deal with almost any small push as Fire Spirits from the Furnace can easily 1 hit low HP support troops. If your Furnace level is high enough, it can easily chip down a Tower while you are working on the other one.
Fire Spirits: One of the best common cards right now IMO. Fire Spirits can easily help you deal with Barbarians, Minions, Goblins, Guards, Mini P.E.K.K.A, Musketeer… Great to couple with Hog Rider for the pig push! Please take a look at here to read more about this stunning card! Couple them with 2 other Fire Spirits from the Furnace to make a great push which force your opponent to defend unless he wants to take 600+ damage.
So sorry because this deck contains 2 Legendary cards, here are some great replacements for you:
Ice Wizard = Valkyrie or Ice Spirit.
The Log: Zap/Arrows.
Sorry for the pretty short guide. I am working on this deck right now and will release a more detailed version of it soon! Good luck guys!