Damage Reduction

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Here's a comprehensive list of everything in the game that provides Damage Reduction. Damage Reduction directly reduces the amount of damage taken in combat by subtracting its number from the damage, differentiating it from Damage Absorption, which is a variable in a formula which reduces by a percentage the damage taken. Damage reduction is applied before Damage Absorption and Elemental Resistance.

Regular Sources

Source	Source Type	DR	Duration	Cost	Prereq	Notes
thicksilver ring	Accessory	50	First hit only		10 Mys	Damage Absorption +30 Damage Reduction: 10 (if not first hit)
Jarlsberg's pan	Off-Hand Item	30	First hit only		None	Spell Damage +50% Regenerate 8-10 MP per adventure +50% Food Drops from monsters +2 Mysticality Stat(s) Per Fight +1 Food Conjuration for Jarlsberg Converts dropped food and booze into Cosmic Calories (cosmic portal mode) Cannot equip in Hardcore (except for Avatar of Jarlsberg)
Impregnably Delicious	Item	30	10 turns	Item Loss	None	Obtained from Bottle of Mystic Shell
Mistified	Adventure	30	30 turns	1 Adventure	None	Obtained from vamping out
You're Rubber	Item	30	20 turns	Item Loss	None	Obtained from a rubber nubbin
Brimstone Bunker	Off-Hand Item (Shield)	25	Always		30 Mus	Muscle +50% Moxie -20% TT's BM reward
old-school flying disc	Off-Hand Item (Shield)	24	Always		200 Mus	The shield has a coded damage reduction of 14, and enchantment of DR: 10 Can also be used as a combat item Muscle +15% +5 to Familiar Weight
teflon shield	Off-Hand Item (Shield)	24	Always		85 Mus	Muscle +10% Damage Absorption +50
velcro shield	Off-Hand Item (Shield)	24	Always		85 Mus	Mysticality +10% +25% Weapon Items from Monsters
vinyl shield	Off-Hand Item (Shield)	24	Always		85 Mus	Moxie +10% +25 to Monster Level
HOA regulation book	Off-hand	23	Always		100 Mus	Reduce enemy defense by 20% -100 to Monster Level So-So Resistance to All Elements
cool iron breastplate	Shirt	20	Always		200 Mus	Maximum HP +200
cool iron greaves	Pants	20	Always		200 Mox	Regenerate 20-40 HP per adventure
cool iron helmet	Hat	20	Always		200 Mox	Serious Hot Resistance (+3)
Protects-Your-Junk	Accessory	20	Always		100 Mox	75% Chance of Preventing Negative Status Attacks Grants Protection from Dreadsylvanian Curses Reflects sets ofpuppet strings and jawbruisers May not equip more than one
Mer-kin roundshield	Off-Hand Item (Shield)	19	Always		85 Mus	Damage Absorption +40 Regenerate 10-20 HP per adventure
sealhide buckler	Off-hand	17	Always		65 Mus	Damage Reduction is both the shield's natural deduction (7) + effect (10) Part of the Frigid Northlands Garb
iShield	Off-Hand Item (Shield)	16	Always		35 Mus	Serious Hot Resistance (+3) Moxie +15% Note: 6 is from the fact the iShield is a shield, 10 is from its enchantment
tailbone shield	Off-hand	16	Always		200 Mus	+40 Stench Damage Deals 80-100 Stench Damage to attackers
antique shield	Off-Hand Item (Shield)	15	Always		85 Mus	Part of the Antique Arms And Armor Combat Initiative -10% Pulverizes into useless powder Can break in combat
astral shield	Off-hand	15	Always		None	Muscle +25% Regenerate 5-10 HP per adventure
card sleeve	Off-Hand Item	15	Always			With an Alice's Army Foil Martyr inserted
Dallas Dynasty Falcon Crest shield	Off-Hand Item (Shield)	15	Always		85 Mus	An ultra-rare item Superhuman Resistance to All Elements
Hardened Fabric	Item	15	20 turns	Item Loss	None	Obtained from fabric hardener
Ol' Scratch's stove door	Off-Hand Item (Shield)	15	Always		200 Mus	+20 Hot Damage Deals 40-50 Hot Damage to attackers
Oscus's garbage can lid	Off-Hand Item (Shield)	15	Always		200 Mus	+20 Stench Damage Deals 40-50 Stench Damage to attackers
Staff of the All-Steak	Weapon (1)	15	Always		50 Mys	Quest item only in AoJ run Spell Damage +50% Regenerate 5-6 MP per adventure Jiggle: Massive Bonus to Item Drops (5 charges left today)
Scrappy, Shadowy	Item	15	10 turns	Item loss		Obtained from scrap of shadow +25 Spooky Damage
Zombo's shield	Off-Hand Item (Shield)	15	Always		200 Mus	Part of the Dire Drifter Duds Bonus for TTs only: Damage Absorption +50 +30 Spooky Damage Muscle +20%
battered hubcap	Off-Hand Item (Shield)	14	Always		65 Mus	Muscle +15 Maximum HP +100 So-So Resistance to All Elements
spongy shield	Off-Hand Item (Shield)	14	Always		95 Mus	Muscle +10% Regenerate 20-50 HP per adventure Damage Absorption +50
brass dorsal fin	Off-hand	13	Always		85 Mus	Bonus Weapon Damage +20%
eelskin shield	Off-Hand Item (Shield)	13	Always		85 Mus	Maximum HP +55 Maximum MP +55 30-40 Passive Damage when player is hit (underwater adventuring)
grisly shield	Off-hand	13	Always		150 Mus	Slime Hates It Bonus Weapon Damage +50 +6 Extra PvP Fights
duct tape buckler	Off-Hand Item (Shield)	12	Always		82 Mus	Maximum HP +65 Maximum MP +65
rubber ribcage	Off-hand	12	Always		45 Mus	Serious Spooky Resistance (+3)
six-rainbow shield	Off-Hand Item (Shield)	12	Always		70 Mus	Maximum HP +50 Serious Resistance to All Elements
wonderwall shield	Off-Hand Item (Shield)	12	Always		70 Mus	Maximum HP +50
catskin buckler	Off-Hand Item (Shield)	11	Always		75 Mus	Muscle +10 Damage Absorption +50
keg shield	Off-Hand Item (Shield)	11	Always		70 Mus	Damage Absorption +50 Mysticality +5
sawblade shield	Off-Hand Item (Shield)	11	Always		75 Mus	Weapon Damage +11
wicker shield	Off-Hand Item (Shield)	11	Always		70 Mus	Moxie +6
accordionoid rocca	Weapon (2)	10	First hit only		65 Mox	Enables casting of 18-turn Accordion Thief buffs Bonus for ATs only
Armor-Plated	Item	10	10/20 turns	Item loss	None	Obtained from bent scrap metal and scrap metal
black shield	Off-Hand Item (Shield)	10	Always		65 Mus	Part of the Black Armaments Muscle +5 Maximum HP +20
Blessing of Bulbazinalli	The Hidden City	10	20 turns	Item Loss, 1 Adventure	Level 11	Obtained by placing 6-ball on the Bulbazinalli altar in The Hidden City
Chester's muscle shirt	Shirt	10	Always		200 Mus, Torso Awaregness	Muscle +10%
Crusty Head	Item	10	10 turns	Item Loss	None	Obtained from tube of dread wax
hardened slime hat	Hat	10	Always		200 Mox	Part of Slimesuit Serious Resistance to All Elements Muscle +20%
phase-tuned shield generator belt	Accessory	10	Always		None	vs. Bugbears only
polyester pad	Off-hand	10	First hit only		None	Part of the Synthetic Suit Regenerate 4-8 HP per adventure Shieldbutting Stuns Bad Guys
rubber cape	Back	10	Always		85 Mys	So-So Resistance to All Elements
skate board	Weapon (2H)	10	Always		85 Mus	All Attributes +10%
Space Trip safety headphones	Accessory	10	Always		35 Mys	Monster Level -100 Monsters will be less attracted to you. May not equip more than one
star buckler	Off-Hand Item (Shield)	10	Always		67 Mus	Part of the Star Garb All Attributes +2
stone baseball cap	Hat	10	Always		82 Mox	Weapon Damage +15 Muscle -10
thicksilver ring	Accessory	10	Always		10 Mys	Damage Absorption +30 Damage Reduction: 50 (first hit only)
Tranquilized Mind	Item	10	10 turns	Item Loss	None	Obtained from mother's little helper Damage Absorption +50 -1000% Combat Initiative
Wallflowering	Item	10	20 turns	Item Loss	None	Obtained from portable wall Damage Absorption +100
washboard shield	Off-Hand Item (Shield)	10	Always		150 Mus	Bonus for TTs only: Damage Absorption +50
Well-Oiled	Item	10	5 turns	Item Loss	None	Obtained from Oil of Parrrlay Damage Absorption +30 Slight Resistance to All Elements
card sleeve	Off-Hand Item	9	Always			With an Alice's Army Foil Guard, Alice's Army Foil Shieldmaiden, or Alice's Army Foil Wallman inserted
polyalloy shield	Off-Hand Item (Shield)	9	Always		55 Mus	Slight Resistance to All Elements Muscle +10
cyborg stompin' boot	Accessory	8	Always		60 Mus	Weapon Damage +20 Combat Initiative +30% May not equip more than one
Sloth	Skill	8	Always		Bad Moon	Combat Initiative -25%
snailmail coif	Hat	8	Always		67 Mox Turtle Tamer class, if in HC	Muscle +10
Synthesized	Adventure	8	10 turns		Bad Moon	Obtained at The Penultimate Fantasy Airship Weapon Damage -8
hors d'oeuvre tray	Off-Hand Item (Shield)	5	Always		25 Mus	Combat Initiative +15%
painted shield	Off-Hand Item (Shield)	7	Always		45 Mus	All Attributes +3 +2 Spooky Damage +2 Stench Damage +2 Hot Damage +2 Cold Damage +2 Sleaze Damage
snake shield	Off-Hand Item (Shield)	7	Always		42 Mus	Muscle +6 Gives serpentine sword +10 more Monster Level when wielded together
snarling wolf shield	Off-Hand Item (Shield)	7	Always		42 Mus	Maximum HP +40 Gives the lupine sword 9 additional Spooky Damage when wielded together
gnauga hide vest	Shirt	6	Always		25 Mus, Torso Awaregness	Slight Resistance to All Elements
padded tortoise	Off-Hand Item (Shield)	6	Always		35 Mus	Damage Absorption +20 Regenerate 4-8 HP per adventure
speed limit shield	Off-Hand Item (Shield)	6	Always		35 Mus	Damage Absorption +10
yield shield	Off-Hand Item (Shield)	6	Always		35 Mus	Damage Absorption +10
ancient stone head	Off-Hand Item (Shield)	5	Always		27 Mus	75% Chance of Preventing Negative Status Attacks Occasionally blocks attacks
bark boxers	Pants	5	Always		5 Mox	Part of the Vestments of the Treeslayer
Big Candy's tophat	Hat	5	Always		None	+25% Candy from Monsters
Big Flaming Whip	Summoning Chamber	5	30 turns	Item Loss	Level 11	+20 Hot Damage
card sleeve	Off-Hand Item	9	Always			With an Alice's Army Martyr inserted
Deeply Ironic	Item	5	20 turns	Item loss	None	Obtained from ironic mint Regenerate 5-8 HP per adventure
demon buckler	Off-Hand Item (Shield)	5	Always		25 Mus	+3 Hot Damage
gnauga hide buckler	Off-Hand Item (Shield)	5	Always		30 Mus	Part of the Gnauga Hides All Attributes +3
Gobliny Flavor	Item	5	10 turns	Item loss, 4 Spleen	Level 4	Obtained from goblin paste
Hella Tough	Styx Pixie Buff	5	10 turns		Bad Moon	Muscle +25% Bonus Weapon Damage +10
hippo skin buckler	Off-Hand Item (Shield)	5	Always		30 Mus	Muscle +5
penguin skin buckler	Off-Hand Item (Shield)	5	Always		30 Mus	Moxie +5
pointy red hat	Hat	5	Always		40 Mox
Puddingskin	Item	5	80 turns	Item loss		Obtained from scroll of Puddingskin Maximum HP +20
red badge	Accessory	5	Always		60 Mys	Monster Level -25 May not equip more than one
shin gourds	Accessory	5	Always		None	+10 Weapon Damage May not equip more than one
sweatband	Hat	5	Always		35 Mox	+2 Extra PvP Fights Part of the Workoutfit
The Glistening	Item	5	15 turns	Item loss		Obtained from vial of The Glistening +20% Combat Initiative Deals extra attack damage to ghosts in A-boo Peak
Tin, Man	Item	5	10 turns	Item Loss	None	Obtained from tin magnolia
whalebone corset	Accessory	5	Always		12 Mys	Maximum HP -10
white satin shield	Off-Hand Item (Shield)	5	Always		25 Mus	Moxie +2
yakskin buckler	Off-Hand Item (Shield)	5	Always		30 Mus	Mysticality +5
bark beret	Hat	4	Always		5 Mox	Part of the Vestments of the Treeslayer
bronze breastplate	Shirt	4	Always		37 Mus, Torso Awaregness	Damage Absorption +20
cardboard box turtle	Off-Hand Item (Shield)	4	Always		20 Mus	Muscle +3
cardboard wakizashi	Weapon (1H)	4	Always		15 Muscle	Gives the cardboard katana 20 more Bonus Weapon Damage when dual-wielded
Midgetized	Adventure	4	10 turns		Bad Moon	Obtained at 8-Bit Realm Weapon Damage -8
Cloaca-Cola shield	Off-Hand Item (Shield)	4	Always		None	Part of the Cloaca-Cola Uniform Mysticality +1
double-ice britches	Pants	4	Always		20 Mox	Part of Cold Comforts Stupendous Hot Resistance Maximum HP +40 Maximum MP +40
Dyspepsi-Cola shield	Off-Hand Item (Shield)	4	Always		None	Part of the Dyspepsi-Cola Uniform Mysticality +1
pink pinkslip slip	Pants	4	Always		85 Mox	Combat Initiative +35%
turtlemail coif	Hat	4	Always		25 Mox	Muscle +5
Vestments of the Treeslayer	Outfit	4	Always		5 Mox 5 Mys	Overall, this outfit provides Damage Reduction of 15
balloon shield	Off-Hand Item (Shield)	3	Always		10 Mus	Deals 2-3 Passive Damage to attackers
blackberry moccasins	Accessory	3	Always		75 Mys	Moxie +8 Combat Initiative +25% May not equip more than one
box turtle	Off-Hand Item (Shield)	3	Always		10 Mus	Muscle +1
BRICKO bulwark	Off-Hand Item (Shield)	3	Always		None	Maximum HP +6
card sleeve	Off-Hand Item	3	Always			With an Alice's Army Guard, Alice's Army Shieldmaiden, or Alice's Army Wallman inserted
clownskin buckler	Off-Hand Item (Shield)	3	Always		15 Mus	+3 Spooky Damage
coffin lid	Off-Hand Item (Shield)	3	Always		10 Mus	Slight Spooky Resistance
flimsy clipboard	Off-Hand Item (Shield)	3	Always		10 Mus	+5% Meat from Monsters
gauze shorts	Pants	3	Always		70 Mox	Regenerate 6-10 HP per Adventure
giant discarded bottlecap	Hat	3	Always		62 Mox	Part of the Glad Bag Glad Rags Mysticality -10
giant foam finger	Weapon (1H)	3	Always		70 Mus
Jalapeño Saucesphere	S Buff Skill	3	5-15 turns	5 MP	None	Damages Attacking Opponent Sauce spells restore HP
Less Pervious	Item	3	10 turns	Item Loss	None	Obtained from STYX deodorant body spray
meat shield	Off-Hand Item (Shield)	3	Always		15 Mus	+3% Meat from Monsters
peace-sign necklace	Accessory	3	Always		20 Mys
peanut brittle shield	Off-Hand Item (Shield)	3	Always		10 Mus	+100% Candy Drops from Monsters
pixel shield	Off-Hand Item (Shield)	3	Always		10 Mus	Muscle +5
safety vest	Shirt	3	Always		20 Mus, Torso Awaregness	Moxie +5
snow hat	Hat	3	Always		10 Mox
Twinklebritches	Item	3	5 turns	Item Loss	None	Obtained from twinkly powder
Unyielding Flesh	Skill	3	Passive	None	None	Obtained from An Open Grave during Zombie Slayer
ancient stone fist	Weapon (1H)	2	Always		27 Mus	Maximum HP+20
bark bracelet	Accessory	2	Always		5 Mys	Part of the Vestments of the Treeslayer
bullet-proof corduroys	Pants	2	Always		70 Mox	Part of the War Hippy Fatigues Maximum MP +40
distressed denim pants	Pants	2	Always		70 Mox	Part of the Frat Warrior Fatigues Slight Stench Resistance
sebaceous shield	Off-Hand Item (Shield)	2	Always		2 Mus	+1 Stench Damage +1 Sleaze Damage
barskin buckler	Off-Hand Item (Shield)	1	Always		None	Muscle +2
cheap studded belt	Accessory	1	Always		None	Can block attacks, but eventually breaks
sewer turtle	Off-Hand Item (Shield)	1	Always		None	+1 Stench Damage
Basted	Adventure	-2	10 turns		Bad Moon	Occurs at The Deep Fat Friars' Gate +10 Sleaze Damage
Burning Heart	Adventure	-2	10 turns		Bad Moon	Occurs at The Haunted Kitchen +10 Hot Damage
Freaked Out	Adventure	-2	10 turns		Bad Moon	Obtained at The Haunted Library +10 Spooky Damage
Frostbitten	Adventure	-2	10 turns		Bad Moon	Obtained at The Goatlet +10 Cold Damage
Guanified	Adventure	-2	10 turns		Bad Moon	Obtained at Guano Junction +10 Stench Damage
Re-Possessed	Adventure	-2	10 turns		Bad Moon	Occurs at The Haunted Billiards Room Bonus Weapon Damage +10
Wrath	Skill	-4	Always		Bad Moon	+10 Melee and Spell damage
Erudite	Item	-10	10 turns	Item Loss	None	Obtained from black sheepskin diploma Mysticality +10% Spell Damage +15

Varying Reduction

Source	Source Type	DR	Duration	Cost	Prereq	Notes
Brawnee's Anthem of Absorption	AT Buff	floor(level1.2)	5-15	13 MP	None
Coy to the Hurled	Item	0-2	10 turns	Item Loss	None	Sometimes obtained from disintegrating sheet music
El Vibrato Relics	Outfit	3 per WALL card	Always		200 Mus 200 Mox	May have any number of other effects, see El Vibrato helmet for details
navel ring of navel gazing	Accessory	1 per level	Always		None	Spell Damage +100% -1 MP to use Skills Intrinsic Effect: Omphaloskepsis: Prevents 50% of enemy attacks Run Away is always successful (and sometimes free) Possible end-of-combat effects include: +20% Meat from Monsters +20% Items from Monsters +3 Stat Gains from Fights Restore 10-20 MP May not equip more than one Cannot equip in Hardcore
parasitic strangleworm	Off-Hand Item	Varies	Always		None	Part of the Mutant Couture DR is 1x player level (2x with Yuletide Mutations); level capped at 15
Operation Patriot Shield	Off-Hand Item (Shield)	1 per level	Always		None	+3 Stat Gains from Fights Maximum HP +20 Maximum MP +20 Class-specific enchantments Can be thrown in combat Cannot equip in Hardcore
pilgrim shield	Off-Hand Item (Shield)	1 per level	Always		None	Maximum HP +30 +15 Weapon Damage +3 Stat(s) Per Fight Regenerate 10-12 HP per adventure +50% Weapon Drops from Monsters
Skin of the Leatherback	TT Passive Skill	ceil(level/2)	Always		None
Aided and Abetted	Item	level	10	Item Loss	None	Obtained from Pokëmann band-aid

Notes

• Damage reduction occurs before Damage Absorption. In practice this means damage reduction is modified. i.e., for X% damage reduced expect damage absorption to be X% less. For example, if you have 50% damage absorbed and would take 100 damage, the absorption reduces this 50 damage. If you throw 20 damage Reduction on top of that (which reduces the damage by 20% in this case), the Absorption will only apply to the 80 damage remaining, thus reducing only by 40 (which is 20% less than the 50 it would have reduced).
• It is not possible to reduce damage below 1 (monster fumbles and misses notwithstanding).

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