Using the clowns and putting defensive spell/trap cards, the clowns will have decent survivability, and will be able to destroy your opponent's monster easily. This can open up your opponent to some direct attacks. Using the skill to summon Barrel Dragon at the right time can let you end the duel early.
What you summon early in the duel mostly depends on what you get in your starting hand, but there are some things to consider before choosing which one to summon. 4-Starred Ladybug of Doom can be a safe option if you get first turn, while Barrel Dragon and Sergeant Electro are for when you want to use their effects. In most cases, getting some defensive spell/trap cards is good for Dream Clown so you can destroy your opponent's monster. Follow it up with Sergeant to start locking your opponent's spell/trap cards, then Barrel Dragon to finish the duel.
With only 1 Supremacy Berry in the deck, you can only use the skill once or twice. Instead of summoning early, it's recommended to either wait until you get Berry in your hand, or when you can finish off your opponent. You will also have to pay attention to the matchup. If you see your opponent using normal monsters, it can mean they might have an Order to Charge, or a Champion's Vigilance when going against a 3 star demotion decks and a high level dragon deck. Use the skill cautiously and summon early to prevent a Vigilance, while using it later to avoid a Order to Charge.
The Flame of Tyrant box was ranked number 2 for months!
The only box which was better than the Flame of Tyrant pack was Ultimate Rising.
Even now, Flame of Tyrant is in a tie for second place with the new Crimson box!
Ultimate Rising = rank 9.5
Flame of Tyrant = rank 8.0
Crimson Kingdom = rank 8.0
The Golden standard of awesome-ness!
What on earth have you been spending your gems on?
Furthermore, I forgot to mention Shallow Grave which might finally get some play due to the new Crimson pack having Zombie support!
I believe it will get play in the near future when more Zombie decks start to take off.
I also forgot to mention the Pyro decks which stem from this pack!
The majority of Pyro decks use cards from this box.
Lastly, I am still not done!
We haven't even talked about the PVE Decks!
The infamous Level 5 Insect deck which is used in PVE.
The infamous Ryu Senshi deck which is top of the line for beginners as well as all players below stage 39!
Think about that Mister!
Don't have time for Sgt. Electro?
You better make some time for Sgt. Electro!
What on earth are you doing?