Holy crap nuggets! I'm gonna tell you now there is two ways to do this. Ok get 2 pairs of diffrent scrolls. Press a on one in your Inventory (Or X) twice. Go to the other scroll and drop it it. It will duplicate and keep doing that until you hit a large number and then do the same thing to the thing you wanna duplicate. But with this Version you can only drop small objects and such, Stones, Staffs, Some daggers etc.
The other way is pretty crazy! You need a Skull of corruption and staff of worms. Kill someone. Revive them. Create a clone with the skull. Kill the clone. When the clone is burning save your game and BOOM! (Put what you want to duplicate in their corpse before reviving)