Ok, this a proven cheat that will work. But I'm not taking credit for it because I found it somewhere else.
It goes like this:
Get two magic scrolls of the same kind (any common scroll will do).
Then buy one scroll of a different kind.
After that go to the two scrolls you bought our already have, highlight them and press A.
Then highlight the other scroll and drop that one.
Exit out of the Menu and you will find two scrolls lying on the ground.
Pick those two scrolls up and and go to the menu and drop one of the other two scrolls.
Then after you dropped one scroll go back and press A once on the two scrolls you picked up.
Then go to the one scroll that was with the other one that you dropped and drop that scroll.
Then you will have four scrolls on the ground.
Once you get above two scrolls you will have to drop all but one scroll. Keep on doing this until you have aleast 10 in your inventory.
Then Highlight one of the sets of scrolls and press A.
After that go to any item you want to duplicate and drop it. And you will have the number of items that was listed for the number of scrolls you had.
You can go as high in the number scrolls you want. But if you go above 5k it will make the game freeze.
One other thing is that you can not duplicate any stolen items.
This cheat is proven to work if you do it right.
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