For example, Polymorph destroys its target no matter what, but if theres no creature cards left in that controllers library, then the effect returns nothing
Just some mana rocks and ways to reduce the cost of our spells
forgive me..." Ishizu Ishtar When starting a Duel with Ishizu Ishtar, he says "I don't believe in any of your destiny nonsense, is that clear?" followed by "The only thing I believe in is the power of my cards to take you down!" When he wins the Duel, he says "You believed that destiny would leave you to victory." followed by "But I just proved that destiny is nothing but a joke!" Mokuba Kaiba When starting a Duel with Mokuba Kaiba, he says "If you're showing no mercy, then I won't either, Mokuba!" When he wins the Duel, he says "Amateur...", followed by "Get out of my sight!" or "During a Duel, there are no friends or family!" followed by "Got it, Mokuba?" When he loses the Duel, he says "Heh, you made a good move

This allows for powerful Rank 4 and 5 plays in combination with Tellerknight Ptolemaeus The plays are simple since they dont require dealing damage, having a particular amount of LP, or having the entire deck in the graveyard similar to Exchange of Spirit or Magical Explosion FTKs
I believe it is because of this that Yugioh-Land.com is able to offer the game at well under the usual $29.99-34.99 price that we are seeing out there in the US market
There's a lot of ways to build mana bases, and many different possible configurations that you can use