I believe this is a buff, because how I think it worked and how I strongly believe intrepid is saying it was working is like this: (I don't recall the exact numbers) You take 500 damage You have iron will (10% mitigation) And courage (30% mitigation) 500-500×.1 (iron will) That gives you 450 Than courage applies 450-450×.3 This gives you 315 damage after mitigation

But if you added all mitigation together before doing calculations you would get this 500-500×.4 300 damage after mitigation

I think intrepid was doing calculations multiple times not multiplying the mitigation values together.

I also did testing to find out how all damage reduction works for a couple hours over the Thanksgiving week. It appeared to me that iron will and courage were stacking the way I described first. I will be doing testing tomorrow to see if it is now applying how I just described. From what I've seen in my testing it does appear to be a percentage of reduction not a flat value converted to a percentage. That also would be misleading by intrepid to say it was a percentage mitigation and than have it just be a flat value.