New enchantment to rival mending

So I have been thinking that as we all know, mending is a very powerful enchantment.. So my idea for an alternative enchantment is that depending on your durability, your weapon or armor protects or does more damage. As your durability goes down, the benefits of the enchantment slowly go down until the weapon or armor either breaks and or is repaired. This enchantment will lower the cost of repairing slightly and will not work with mending just like infinity enchantment and mending. The enchantment will only have 1 level just like mending for simplicity.