Wizards that study duplication can make an exact copy of another object in the blink of an eye. They can duplicate everything from objects to spells!

Spellbook Duplication

If your spell book is in danger of being destroyed, your instincts immediately respond to it by duplicating the book. This ability can only be used once a month.

Minor Duplication

As your action for the turn, you may duplicate one non-magical object you are touching. The object must be no bigger than a 3ft by 3ft cube. Roll 1d4. The object is duplicated 1d4 + your intelligence modifier. The object(s) last for one hour. This ability has 3 uses, and once those uses are expended you can not use this ability until you finish a long or short rest.

Cantrip Amplification

Starting at 6th level, when a creature is damaged by one of your cantrips, you may duplicate the cantrip, making the creature take twice the damage. This ability only works if the creature failed on the saving throw. If the cantrip does not do damage, multiply the number of targets x2.

Advanced Duplication

Beginning at 10th level, You can now duplicate creatures by your proficiency bonus + 1d8 (or 6). After performing this ability, you gain one level of exhaustion and can’t use ability for 1d6 - your intelligence modifier days. The creatures are in existence until they die. They are charmed by you because of you bringing them into existence, and will follow your commands to a certain extent, determined by the DM. 

Duplication Mastery

Starting at 14th level,  Your mastery of duplication has made it so 1d8 in advanced duplication is 6d10, 1d4 in minor illusion is as much as 1d10, and you can duplicate a magic item. The duplicate will disappear after 1 hour, and can only be made once every 12 hours.