Here is an example of a multi-deck strategy, using Sil'fer. The idea for this deck is the same, but there are 5 variations on it. The reasons for these variations are so that the deck may be used in any given situation, and still be viable, essentially simulating a sideboard.

No Dragon Slayer

2 x Sword
2 x Sealed J-Sword
1 x Tsumikiri
2 x Barrier
1 x Shield
3 x Slash
3 x Heavy Slash
1 x Beat
2 x Dodge
3 x Guard
2 x Resist
1 x Patience
3 x Companion
1 x Dice + 1
2 x Punch
1 x Gizonde

Pulled a Barrier and a Dodge for 2 Dragon Slayers, added Saber Dance

2 x Sword
2 x Dragon Slayer
2 x Sealed J-Sword
1 x Tsumikiri
1 x Barrier
1 x Shield
3 x Slash
3 x Heavy Slash
1 x Beat
1 x Dodge
3 x Guard
2 x Resist
1 x Patience
2 x Companion
1 x Dice + 1
1 x Saber Dance
2 x Cross Slay
1 x Round Slay

Took out a Companion and the Saber Dance to add 2 Punches

2 x Sword
2 x Dragon Slayer
2 x Sealed J-Sword
1 x Tsumikiri
1 x Barrier
1 x Shield
3 x Slash
3 x Heavy Slash
1 x Beat
1 x Dodge
3 x Guard
2 x Resist
1 x Patience
1 x Companion
1 x Dice + 1
2 x Cross Slay
1 x Round Slay
2 x Punch

Switched a Cross Slay for 1 Punch, no Saber Dance

2 x Sword
2 x Dragon Slayer
2 x Sealed J-Sword
1 x Tsumikiri
1 x Barrier
1 x Shield
3 x Slash
3 x Heavy Slash
2 x Dodge
3 x Guard
2 x Wall
1 x Protection
2 x Resist
1 x Companion
1 x Dice + 1
1 x Cross Slay
1 x Round Slay
1 x Punch

No need for powerful weapons, multiple attacks work, so ditched the Sealed and Tsumikiri.

3 x Sword
3 x Dragon Slayer
2 x Barrier
3 x Slash
3 x Heavy Slash
1 x Beat
2 x Dodge
3 x Guard
2 x Resist
1 x Patience
2 x Companion
1 x Dice + 1
1 x Saber Dance
2 x Punch
1 x Gizonde