Ok here is somthing that can help if your looking for a certain card.

Start out by going into Free Battle.

If you don't already have a 2nd character make one. Choose your Main Character (Main) and then the 2nd character (Dummy Character).

When you go to choose your deck with your main character choose the best one you have.

When you choose your Dummy character's deck choose the default Arkz Deck.

Now go to Rules and change minimum roll to 6 and Player HP to 35.

Start the battle. With your main character equip a Sword or Partisan. With your dummy character equip 6 monsters in 2 rows. Your main character will then attack monsters untill the dammage you have done 65 Damage total (TO THE MONSTERS NOT BREAK).

Now go ahead and kill Break. You will have done 100 Damage giving you the S-Rank and alot of Cards! This is very quick a useful for Rare hunts. Good Luck!