The Protagonist get a System where he can draw a random Yu-Gi-Oh! Card once every day.
He can use each cards to summon Monsters or activate various effects of Spell & Trap Cards once per day with this ruling:
- He gain the ability to summon the Monsters from Yu-Gi-Oh! Franchises.
The stronger the monster the more magic it takes to summon them.
1 to 4 star Monsters are the easiest to summon and take only little effort.
And istead of sacrificing monsters, 5 and 6 star Monsters cost more magic to summon.
Meanwhile, the 7 and 8 star Monsters cost much more magic while 9+ star Monsters are so costly it might be impossible to summon at first.
But as he grow in strength it will be easier for he to summon more powerful Monsters.
- He gain the ability to channel the power of the Monsters instead of summoning them, gaining their power, skills, etc.
This is less costly than Summoning them but He can only channel one Monster at a time.
He may also take on the Monsters form if He wish.
- The Monsters are loyal to Him despite their possible personality and generally favor Him unless he prove to be a cruel summoner.
And of course, lewding the monster girls are indeed possible.
- He gain the ability to use Spell and Trap cards as actual spells and traps. Spells can be cast as quickly as He like but Trap Cards need to be "set" and primed for at least 1 minute unless otherwise noted.
- At first He may only summon a total of 5 Monsters at a time and cast a total of 5 Spell/Trap cards at once but as His power and experience grows He can summon more and more at a time.
- Instead of a Deck, He have a mental list of all Yu-Gi-Oh! cards he have that can be used at any time he wants. However, mental sorting and choosing what to summon or set at a time is up to him.
- He gain the ability to Summon and use without consequences the Power of all Seven Millennium Items.
- He have the ability and become a master of using Shadow Magic and capable of hosting the Shadow Games.
- He gain the power of the Gentle Darkness and become a master of it.
- He is able to physically create the various dueling/trading cards he have for personal use.
- He gain Her own custom Duel Disk for dueling use. He can also summon other standard Duel Disks for His opponents in a Duel.
- He can also summon His own custom Duel Arena (from Duelist Kingdom Arc) if He wish.
- He also gain the knowledge and ability to recreate any technology from the Yu-Gi-Oh Anime and Manga series, for example that cool but stupid Duel Runner where you can drive a motorcycle while playing children card games with the fate if the world as it stakes.
Note: Due to how the various card effects can react and be used in Real World I will just say to anyone who is interested in making this kind of novel to Please Fanwank Responsibly.
Oh, have I said that he also have access to the "rule" of the Duelist Kingdom should he wish to use it?
What I Mean is that if he say something with enough confidence and can connect it to the cards he is using, whatever he said will happen.
For example, he can use cards like Dark Hole or Galaxy Cyclone to, say, destroy the entire Planet, leaving him stranded alone in the empty space.
He can use any cards without worry about any bad side effects affecting him. But the same can't be said for those around him.
For his starter deck..... I will upload them in next chapter. Stay tuned!
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Oh, and if you have any more ideas to be added to this system, feel free to say it in the Chapter Comments.