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 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.

Source	Source Type	MP Cost	Duration	Cost	Prereq	Notes
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	The discount stacks with other effects and equipment, to possible total of 6
plexiglass pocketwatch	Accessory	-3	Always		75 Mys	+3 Extra Rollover Adventures Mysticality +30% P's HCO reward May not equip more than one
stainless steel solitaire	Accessory	-2	Always		30 Mys	+2 Extra Rollover Adventures Mysticality +15% P's HC reward May not equip more than one
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
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: 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
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 +30%

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