This requires making a patsy character who's sole purpose is to lose.

Create a deck on your patsy character using Ino'lis, orginize it so she has alot of lower tier weapon cards at the begining of the deck all consisiting of 6 hp or less for our purposes.

Once that is done, save the deck and then set up your deck for your real character. Chose Break for your deck and make the first seven cards as followed

1-2. Hilde Bear
3-7. Foie, Zonde, or Barta (any asortment)

Once that is done you don't have to care what other cards are in the deck as long as those are your first seven in that order, save your deck and go to set up the match between yourself and you patsy/dummy character.

Choose which ever Stage you please (I prefer Caelum A because of the music) and change the following two Rules

Minimum Dice Role To 6
Deck Shuffle To Unactivated

Once that is Done Start the match.

The Following Steps in battle will give you a gaurenteed S-Rank Against your Dummy Character Every Time

1. Depending on who goes first do the following actions
Ino'lis: Equip two of your weapon cards a 1 point card and a 2 point card, then move yourself across the screen so you're infront of break and end your turn.
Break: Bring one of your Hilde Bear Cards into play so it is either to the left or the right of you, if Inolis is already infront of you Attack with your Hildebear and then end your turn.

2.This one is also Depending on who goes first after this step it doesn't matter who goes.
Ino'lis: Equip one or two weapon cards (Depending if you she got hit) so you have three and then end your turn.
Break: Bring out your other Hilde Bear at this point and have them both attack her weapons destroying two of them, end your turn obviously.

3. From this point on your duty consists of making sure ino'lis has three weapon card equiped on her at all time, with break you attack with your two Hildebears that are on either side of you and with break you use one of your techinque cards for the third attack on her third weapon.

4. Step three is repeated until Ino'lis is dead, never attack her when she doesn't have a weapon equiped becuase it will cause your s-rank to go down. Also make sure to only attack with break using technique cards, i'm not sure why its just a faux pa.

Viola you have an s-rank every time unfortunately it doesn't gaurentee great cards every time, However the first time i did it i got a sheild of delsaber and a yamato. Repeat till your hearts desire better cards will be awarded according to the level of yourself and your patsy.