The Scroll of efficiency is a Dungeoneering reward sold by Marmaros and Wythien. It requires a Smithing level of 55 and a Dungeoneering level of 55. Reading the scroll of efficiency permanently unlocks the ability: when smithing items which require at least 3 bars, there is a chance of retaining a bar. The chance of saving is less with higher tier bars. The chance of saving a bar is per (at least 3-bar) item smithed, not each bar has a chance of being saved. For example, smithing steel platebodies in the long run will use up 4.8 bars per body, while smithing steel chainbodies will use up 2.8 bars per body.
Once the scroll is bought, it cannot be bought again. If a player tries to buy a second scroll, a message will appear saying "You've already got one of those. Go read it."
When read, you get the message: "The secret is yours! You unlock the ability to save bars when smithing.". When you save a bar you get the message: Wasteless smithing: <Type> bar saved!
Items that require at least 3 bars:
|Metal||Chance (%)||Average Savings/item||Cost of three bars||Cost of five bars||Cost of three bars with Scroll||Cost of five bars with Scroll|
|Bronze||50% chance||322 coins||1932 coins||3220 coins||1610 coins||2898 coins|
|Iron||25% chance||216.5 coins||2598 coins||4330 coins||2381.5 coins||4113.5 coins|
|Steel||20% chance||149.2 coins||2238 coins||3730 coins||2088.8 coins||3580.8 coins|
|Mithril||10% chance||63.2 coins||1896 coins||3160 coins||1832.8 coins||3096.8 coins|
|Adamant||8% chance||114.24 coins||4284 coins||7140 coins||4169.76 coins||7025.76 coins|
|Rune||5% chance||113.85 coins||6831 coins||11385 coins||6717.15 coins||11271.15 coins|
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