Since you need another face-up Six Samurai monster on your field, you can easily do that using cards from the same box which are Powerful Rebirth and Copy Knight. They both work for Hand of the Six Samurai's effect. Powerful Rebirth can let you re-use its effect if you tribute itself and have another Six Samurai on your field. Copy Knight can help get Great Shogun Shien to the field to limit your opponent's spell/trap use.
Shien's Footsoldier lets you search for Hand of the Six Samurai from your deck, and since it's a special summon, you only need to normal summon any Six Samurai monster during your turn to activate its effect. Swiftstrike Armor also helps with swarming the field, but it can rely on luck.