Cards you need are: Monster Reborn, Raigeki, Just Desserts, Heavy Storm, Princess of Tsurugi (Don;t know hot to spell this card)

 

If you are able to do this, you are considered very lucky.

First, let your opponent put down 5 monsters by putting all of your monsters in DEF mode, so you won;t get hurt. After, put the princess face down with Heavy Storm.When the opponent attak the princess, 2500 damage. When it's your turn, flip Heavy Storm, and then put down Just desserts = another 2500 damage, then Raigeki, then.....Monster Reborn BEWD and attack = 3000 damage....

       2500

       2500

     +3000 = 8000

 

I know this is stupid, but I did this one time so..... ;)