Needs review
Source: Quintessential Elf 2

Description: You know the Charms that destroy the bonds that hold magical items together

Prerequisites: Able to cast Dispel Magic

Required for: Unbinder's Blessing

When you cast Dispel Magic or Greater Dispel Magic on a magic item you may sacrifice a second arcane spell of any level to increase the effect. You may increase your effective level for the dispel check by twice the level of the spell sacrificed. 0 level spells sacrificed in this manner add +1 to the dispel check.