Physical Resistance Rating

Physical Resistance Rating is a new form of damage mitigation that was added with Update 14.

It provides a % resistance against physical damage (bludgeoning, slashing, and piercing), and is granted through multiple sources (items, feats, enhancements) and stacks with itself. Character sheets show the Physical Resistance Rating of the player next to the elemental resistances.

PRR is applied after damage reduction (If a player would take 20 damage before DR or PRR and has 72 PRR (33.48% reduction) and 10 DR, the PRR is applied to the damage that passes through the DR. The result is: (20 - 10) * 66.52% = 6.652. This is rounded down to 6 damage).

Formula

 * (1 – (0.99^PRR)) × 0.65


 * Every 1 point of PRR reduces the amount of physical damage you would otherwise be taking by 0.65%.


 * 1 PRR takes 0.65% less damage than 0 PRR.


 * 2 PRR takes 0.65% less damage than 1 PRR and 1.29% less damage than 0 PRR.

Items

 * Bonuses from armor proficiency
 * Heavy Armor gives you Physical Resistance Rating equal to your Base Attack Bonus +6.
 * Medium Armor gives you Physical Resistance Rating equal to 2/3 of your Base Attack Bonus (round up) and add +4.
 * Light Armor gives you Physical Resistance Rating equal to 1/2 of your Base Attack Bonus (round up) and add +2.
 * Adamantine Body gives you Physical Resistance Rating equal to your Base Attack Bonus.
 * Mithral Body gives you Physical Resistance Rating equal to 1/2 of your Base Attack Bonus (round up).
 * Enhancement bonus: items with the Sheltering enchantment or items augmented with a Sapphire of Physical Resistance
 * Artifact bonus: Planar Focus of Prowess grants 15 physical resistance when in a set with a Planar Conflux.

Feats

 * Shield Mastery increases the Physical Resistance Rating by 3 when using a buckler or small shield, 5 when using a large shield, or 10 when using a tower shield.
 * Improved Shield Mastery increases the Physical Resistance Rating by 5 when using a buckler or small shield, 10 when using a large shield, or 15 when using a tower shield. (Probably not stacking with Shield Mastery.)*
 * Two Weapon Defense increases your Physical Resistance Rating by 5 when you wield two weapons (This bonus does not apply when fighting unarmed/with handwraps).

Tested does not "stack" Improved Shield Mastery numbers are the total you get for having the feats.

Monk Enhancements

 * Lesser Mountain Stance improves the Physical Resistance Rating by 3.
 * Mountain Stance improves the Physical Resistance Rating by 8.
 * Greater Mountain Stance improves the Physical Resistance Rating by 12.
 * Ultimate Mountain Stance improves the Physical Resistance Rating by 15.

Fighter Enhancements

 * Stalwart Defender I improves the Physical Resistance Rating by 10.* (see Notes in Paladin version)
 * Defensive Stance improves the Physical Resistance Rating by additional 10.
 * Stalwart Defender II improves the Physical Resistance Rating by 15.
 * Defensive Stance improves the Physical Resistance Rating by additional 15.
 * Stalwart Defender III improves the Physical Resistance Rating by 20.
 * Defensive Stance improves the Physical Resistance Rating by additional 20.

Needs testing, Paladin version gives a total of 20PRR while in stance III with no additional PRR "while a shield is equipped" assume same for Stalwart? Appears something broke the "when shield equipped" extra PRR. It works on an Old Pali I have but not on new ones. Assume Enhancement Alpha preview left over like many others in U18 (Spell power Lore items etc.).

Paladin Enhancements

 * Defender of Siberys I improves the Physical Resistance Rating by 10 when using a shield.* not currently working
 * Defensive Stance improves the Physical Resistance Rating by 10.
 * Defender of Siberys II improves the Physical Resistance Rating another 5 when using a shield.
 * Defensive Stance improves the Physical Resistance Rating to a total of +15.
 * Defender of Siberys III improves the Physical Resistance Rating another 5 when using a shield total +20.
 * Defensive Stance improves the Physical Resistance Rating to a total of +20.


 * Additional PRR "when using a shield" (Stance not required) in description appears to be bugged it is working on an Old Paladin, not working on new ones created for testing. Assuming broken in U18 when enhancement alpha preview code snuck in to live.

Ranger Tempest enhancements

 * Tempest I improves the Physical Resistance Rating by 3 when two-weapon fighting.
 * Tempest II improves the Physical Resistance Rating by 5 when two-weapon fighting.
 * Tempest III improves the Physical Resistance Rating by 10 when two-weapon fighting.

Epic Destinies

 * Legendary Shield Mastery, an Unyielding Sentinel's tier 2 ability, improves PRR by 5 per rank when wearing a shield. 3 ranks total, higher ranks require (Improved) Shield Mastery.
 * Heed No Pain, the Unyielding Sentinel's level 4 innate ability, improves PRR by 10 and grants 20 additional physical resistance while in Unbreakable stance.
 * Improved Combat Expertise, a Legendary Dreadnaught's tier 2 ability, improves PRR by 20 when Combat Expertise is active.
 * Sigil of Spell Warding, a Magister tier 1 ability, improves PRR by 15 while it is active and you are standing inside it.
 * Standing with Stone, a Grandmaster of Flowers tier 4 ability, improves PRR by 5 points per rank (3 ranks), if you have Monk levels and are in Mountain stance.