Much like how the protagonist in any mainline game begins their journey by selecting their starter, Mark has to choose his first TCG deck at the beginning of the game
Chart shows the price of Ho-Oh Legend #112 at the end of each month going back as long as we have tracked the item.
Every now and then, Yusei's AI (while it controls "Stardust Dragon") will Special Summon "Level Eater" by decreasing the Level of "Stardust Dragon" by 1, then tune the "Stardust Dragon" with a Level 1 Tuner monster for another "Stardust Dragon"
Thrasios, Triton Hero often serves as an outlet for infinite mana to draw your deck and dig towards win conditions like Thassa's Oracle and other finishers while giving your deck critical access to blue cards
The ante concept became controversial because many regions had restrictions on games of chance
Of course, each individual creature type has its own set of deliberate payoffs, usually in the form of lords or thematic tie-ins