Yu-Gi-Oh!, Season 2

(In the Domino Museum)

Ishizu:
I've secured the most precious artifacts here. We've recovered stone carvings that depict the earliest known games played in Egypt. I'm sure you'll find it most familiar. Kaiba, behold the origin of Duel Monsters!

(Kaiba enters when suddenly he sees a stone tablet sealed in display)

Kaiba:
It can't be... These carvings look like Duel Monsters Cards! Then that means your story is true!

Ishizu:
I see you've come to your senses. Furthermore there's a theory that in ancient times these monsters were real. Egyptian sorcerers summoned monsters to earth to do their bidding, but they soon realized that the monsters could not be control. They destroyed villages and brought earth to the brink of destruction. The citizens turned to the pharaoh for help, though he could not defeat the monsters. He managed to use his magic to seal them away in stone tablets and brought peace to the world. However, overtime evil sorcerers learned how to control the monsters and released them from the tablets. With their army of powerful monsters, the sorcerers were confident that no one could stand in their way. They betrayed the pharaoh and wage an all-out war against him. This is the one you must look at.

Kaiba:
Hm?

Ishizu:
This carving is the reason I called you here tonight. It depicts one of the main conflicts in the war between the pharaoh and his greatest opponent, closely examine this artifact. After this moment, Kaiba, your life will never be the same.

Kaiba:
[sees the Pharaoh figure that looks like Yugi] That's the Pharaoh?! But, that's Yugi! And the monster carved above him is the Dark Magician!

Ishizu:
On the left is the sorcerer fighting against him. (Kaiba is shocked to see that the pharaoh's greatest opponent is none other than an ancient Egyptian version of himself) That's you, Kaiba! If you still have any doubt, look at his monster. It's the Blue-Eyes White Dragon!