The six samurai are a deck that i have recently invested alot of trade to obtain including dark magician of chaos, dimension fusion, and a few other cards. Is it worth it? I'd say yes. What makes them some so good is the brokeness of Grandmaster. No matter what you do to it it keeps coming back again and again beating its way around royal oppression and other cards like solemn. Solemn is suppose to be a card that can counter any card except it can't counter grandmaster. Six samurai are literally just as broken as DAD with its FTK abilities.
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Yu-Gi-Oh!