Here are some fun facts about Yugioh. Plan to add more soon, feel free to do so as well.
The probability of getting all Exodia cards in your starting hand is 0.00000151973 percent, only counting your first 5 draws, assuming a deck of 40 cards.
The largest xyz archetpye is Number.
The largest archetype overall is HERO. Konami loves Jaden, it seems.
Not suprisingly, the large majority of cards are monsters, followed by spells(huge difference in amount though) then traps close behind.
The most common attribute is Earth, while the least common is Divine(Ra, Slifer, Obelisk, and Horakhty).
There is only one copy of Tyler the Great Warrior. The story of this card is actually quite touching.
http://yugioh.wikia.com/wiki/Tyler_the_Great_WarriorIf you equip an equip spell onto an opponent's monster that gives it piercing damage, your opponent takes the piercing damage, and not you.