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The armor constant and armor cap formula will be used for the damage increase calculations later on in the guide. Shade of Aran) will have lower armor compared to non spell users (e.g.
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These two types are bosses with or without Mana aka spell user and non spell user. In Vanilla and The Burning Crusade there are 2 types of bosses with different armor values. This certain portion is called the armor cap and will be addressed later on. Personal armor penetration % is applied to a certain portion of the debuffed armor. Armor % debuff is reduced from boss armorģ. Flat armor debuff is reduced from boss armorĢ. Once again the order in which armor pen is calculated is:ġ. For instance 10% from battle stance + 15% from mace spec + 5% armor penetration from armor penetration rating from items would end up 30%. Armor penetration percentage from talents, buffs and from armor penetration rating stack additively. Percentage armor debuffs stack multiplicatively and apply after the flat armor reduction, if all 3 above mentioned percentage reduction is applied then calculation is Armor * 0.95 * 0.8 * 0.9.
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Major: Shattering Throw/Sunder armor/Expose armor/Nature's fervor/Worm Pet's Acid Spit -> 20%Īscension special: Blademaster -> 10%, Demolisher -> Flat 608/371 armor (Level 70/60)įlat Armor Debuff from items: Annihilator - 3x200 armor, Rivenspike/Bashguder - 3x200 armor, Crystal Yield - 200 armorįlat Armor debuffs stack additively and apply first. Minor: Faire Fire/Curse of Weakness/Scorpid Sting/Wasp Pet's Sting -> 5% We will see this in the calculations below. However on Ascension we have special armor reduction debuffs from LREs, which allow us to constantly keep up the 100% armor reduction. This technique is not applicable to Ascension since shattering throw only applies 5 stacks of Sunder Armor. In WotLK this was only possible if the boss was debuffed with a Major & Minor armor debuff & Shattering throw and the player had 100% ArP, This was only for the limited duration of shattering throw’s debuff. Therefore it is possible for 100% ArP to account for 100% armor reduction. Generally speaking 100% armor penetration (ArP) obtained from talents, items and buffs does not account for 100% armor reduction, however if you manage to reduce the armor of the boss low enough with armor reduction effects applied to the boss, there is a crossover point where 100% ArP is actually 100% armor reduction and thus the boss’ armor will be reduced to 0. TL:DR -> take a look at appendices showing you exactly how much value armor pen provides per percentage in different generic scenarios. The purpose of this guide is to help you calculate how much benefit you get from x% armor penetration and consequently decide whether picking up armor penetration talents/REs and items with armor penetration ratings is worth it compared to getting other stats.
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