Characterized by a monochrome color scheme matching the Pokmon, their low distribution has made them a topic of conversation and caused their market price to rise
Its less about getting every rare card and more about creating a cohesive deck where the cards work well together
Invasion of Innistrad/Deluge of the Dead Here be monsters Our final battle card from March of the Machine is the Invasion of Innistrad, a four-mana Black battle with five health and flash
Likewise, like many manga creators, Takahashi wants to create really evil, despicable bad guys, but he also needs to have them turn into good guys later, so he repeatedly creates bad guys with split personalities, so that the "bad side" of their personality can be exorcised and the "good side" can then go hang out happily with our heroes (and thus become one of the boring coterie of side-characters who do nothing but cheer at Yugi's matches)
The fact that French cards sell for 20 to 40% of the English price while being 10 to 20 times rarer demonstrates the scale of the language discount