Question: how does ied work maplestory?
Answer: How does IED work? I once read on reddit that the way it works is that you simply multiply [100%-(your IED)] by your enemy's PDR to calculate their final damage reduction. So say if you have 90% IED and your enemy has 50 PDR, you'd deal 5% reduced damage, and if they have 250 PDR you'd deal 25% reduced damage.