IndyuceModifiers let you randomize your items even more using the item generator. Modifiers are packets of item stats which have some chance to be added to an item when it is being generated.
A typical modifier for a randomized weapon would be for instance Sharp which would add +3 Atk Damage to the weapon or Toxic which would add an on-hit poison ability to the weapon. Some modifiers are more powerful than others and therefore should have a different chance to be selected. Some modifiers may even be obtainable only for a certain item tier.