Just something I thought up while getting up early this morning, but what would everyone here think of a ‘Piercing’ effect? There is Shield Penetration to counter shields. Wound to counter healing. What about Piercing to counter Damage Resistance? If character A has 50% Damage Resistance and character B has 10% Piercing then when character B attacks character A they would do damage as if character A only has 45% Damage Resistance (as 10% of 50% is 5% so 50% - 5% = 45%). Sorry by my poor math skills by the way (or at least poor explanations involving math).

Piercing would reduce Damage Resistance by the given value which is a percentage of the Damage Resistance value itself, meaning that the higher the Damage Resistance the greater the Piercing. So 50% DR vs 10% P = -5% DR for a total of 45% DR after piercing. 85% DR vs 20% P = -17% DR for a total of 68% DR after piercing. Can someone explain this math stuff better than me please and include a working formula and some examples? Math hurts my brain. I get it but I don’t get it and explaining it hurts.

Edit: Totally forgot to ping the usuals @JoeKGBX and @Jythri because I just got up a little while ago and only just finished my coffee.