Player decks must contain at least 60 cards (for standard play, at least), but only four of each character, item, action, etc
Also including equipment in the color printing packing production line: Folding machine, gluing machine, sewing machine, glue machine, bronzing machine, hardcover hardcover box production line printing equipment etc
You build the world
Swords to Plowshares is a clean, cheap answer that kills almost any creature in Constructed formats and its played as a four-of in both aggressive and control decks alike
When Yusei went to save Rally, Jack stole his "Stardust Dragon" and his Duel Runner and took off to New Domino City to become a Duel King under Rex Goodwin
It fights up to one target creature you dont control