Yu-Gi-Oh!: Card Spirits from Another World

Yu Yu, a user of the HERO Deck, has his soul transported to another world and becomes a man who looks exactly like Jaden Yuki.

To duel again in this new world, he has to keep unlocking his cards through the System.

And with every card he unlocks, he gains the ability to use its corresponding magic.

After successfully unlocking Burstinatrix and Avian and gaining mastery of fire and wind magic, Yu Yu enters Tongye Royal Magic Academy.

There, he begins his first duel in the other world and meets a man named Kaiser, struggling even at full health.

Kaiser: Jaden, duel me! Cyber End Dragon!

Kaiba: Jaden, let me, your senior, put your current skills to the test! Blue-Eyes White Dragon!

Jack Atlas: Behold the majesty of the King! Fight me, Jaden! My soul, Red Dragon Archfiend!

Yu Yu: I’m really not Jaden Yuki!

(Note: The first card game should happen around chapter ten or so. The early duels won’t focus on power levels and will be more like the anime, though later duels may get pretty high-powered.)