Skill MP Cost Modifiers

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Here's a comprehensive list of everything in the game that changes the MP cost of using skills. In most cases, items or effects that reduce the MP cost of skills will not do so by more than three points, in total, and no skill may cost less than 1 MP. The first exception would be the Festival of Jarlsberg holiday, which has an intrinsic three-point discount which stacks with any other reduction, to a maximum of a six-point discount. Arcane in the Brain also ignores the stacking restriction, giving a nine-point discount. Finally, the outfit effect of the Vile Vagrant Vestments yields a five-point discount which stacks with other reductions, leading to a theoretical ceiling of a fourteen-point discount.

Source	Source Type	MP Cost	Duration	Cost	Prereq	Notes
Super Skill	Effect	Free	5 turns	Use of 1/5 Daily Super Powers	None	Combat skills only Obtained from Greatest American Pants. Effect is lost when GAP are unequipped.
Loathing Legion abacus	Off-Hand Item	-5	Always			Combat skills only Stacks with other MP cost modifiers
Vile Vagrant Vestments	Outfit	-5	Always	None	200 Mys	Stacks with other MP cost modifiers Enables Trashquake combat skill in Hobopolis
Arcane in the Brain	Effect	-3	5 turns	8 Adventures	None	Obtained from Path of the Mole Stacks with other MP cost modifiers
astral bracer	accessory	-3	Always		None	Combat skills only Stacks with other MP cost modifiers
Brimstone Bracelet	Accessory	-3	Always		30 Mys	Mysticality +50% Muscle -20% Sauceror's Bad Moon reward May not equip more than one
Dreams and Lights	Effect	-3	5/10 turns	Item Loss/1 Adventure	None	Obtained from fancy but probably evil chocolate or Out in the Garden Mysticality +10
Festival of Jarlsberg	Event	-3	All Day		None	Stacks with other MP cost modifiers
Operation Patriot Shield	Off-Hand Item (Shield)	-3	Always		None	Combat skills only Pastamancers only +3 Stat Gains from Fights Maximum HP +20 Maximum MP +20 Damage Reduction: +1 per level Class-specific enchantments Can be thrown in combat Cannot equip in Hardcore
plexiglass pocketwatch	Accessory	-3	Always		75 Mys	+3 Extra Rollover Adventures Mysticality +30% Pastamancer's HardcoreOxygenarian reward May not equip more than one
Pocket Square of Loathing	Accessory	-3	Always		150 Mys	Never Fumble Superhuman Resistance to All Elements (+5) May not equip more than one
stainless steel solitaire	Accessory	-2	Always		30 Mys	+2 Extra Rollover Adventures Mysticality +15% Pastamancer's Hardcore reward May not equip more than one
Using Protection	Effect	-2	10 Adventures	Item Loss		From Orcish rubber
baconstone bracelet	Accessory	-1	Always		10 Mys	Mysticality +2 May not equip more than one Discontinued item (may be replaced without notice)
baconstone earring	Accessory	-1	Always		10 Mys	Mysticality +2 May not equip more than one
Emblem of Ak'gyxoth	Accessory	-1	Always		30 Mys	Unique item Moxie +43 Can be used once per day for free booze
Idol of Ak'gyxoth	Off-Hand Item	-1	Always		None	Moxie +43 Can be used once per day for a free drink
jewel-eyed wizard hat	Hat	-1	Always		None	Maximum MP +30 MP Regen based on level +5 Duration to Buffs You Cast Allows casting of Magic Missile Cannot equip in Hardcore
navel ring of navel gazing	Accessory	-1	Always		None	Mysticality +25% Spell Damage +100% Intrinsic Effect: Omphaloskepsis: Damage Reduction equal to player level 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
solid baconstone earring	Accessory	-1	Always		40 Mys	Mysticality +8 Maximum MP +15 May not equip more than one
woven baling wire bracelets	Accessory	-1	Always		75 Mys	Spell Damage +15
Crappy Mer-kin tailpiece	Pants	+2	Always		85 Mox	Combat Initiative -25%
Mer-kin gladiator tailpiece	Pants	+2	Always		85 Mus	Combat Initiative -25% Damage Reduction: 10
Mer-kin scholar tailpiece	Pants	+2	Always		85 Mys	Combat Initiative -25% Mysticality +10%
Amulet of Yendor	Accessory	+3	Always		None	Combat Initiative -10% May not equip more than one
Radiating Black Body™	Effect	+3	10 turns	Item loss	None	Obtained from Black Body™ spray. Moxie +10% +10% Critical Hit Chance
Jiggu... What?	Effect	+100	1 turn		None	Obtained from Flex Your Pecs in the Narthex, prior to combat with Shub-Jigguwatt
Chilled to the Bone	Effect	Varies	Varies		None	Enemies get X extra attack(s) against you per round Negative status effect from cold monsters in Dreadsylvania. Its duration and power increase depending on the number of banished elements in the zone from which it was obtained.

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