Item Quality

Item quality is a hidden item mechanic added in The Binding of Isaac: Repentance, assigned to all items. The quality ranges from 0 to 4 and causes them to behave differently with certain items or automatically get rerolled if certain conditions are met.

Mechanics Affected

 * : Determines what kind of item is given by the bag, depending on the pickups put into it.
 * NO!: If multiple copies of the trinket are held, rerolls items with quality 0.
 * : Automatically rerolls items with a quality of 0 or 1, and has a 33% chance to reroll items with a quality of 2.
 * : 20% chance of rerolling items with a quality of 2 or less.