Stumbling places every monster your opponent summons in Defense position, making them easily destroyable by battle. If it's a big monster, then it gives Zanji a free kill.
It makes it a lot easier to have 2 Six Sams on the field at the same time. Also, some Samurai like Yaichi and and Spirit don't mind being in defense position when they're summoned anyways, since they'll be using their effects when they're summoned.
Idk, I just thought think they work well together.
Some Six Samurai decks work by speeding the game up (Double Summon rush). I'm just making it work by slowing the game down.
As for the deck, how does double Gold Sarcophagus sound and what should I take out for them?