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||261.5 coins||1569 coins||2615 coins||1307.5 coins||2353.5 coins|
|Iron||25% chance||254.25 coins||3051 coins||5085 coins||2796.75 coins||4830.75 coins|
|Steel||20% chance||174.8 coins||2622 coins||4370 coins||2447.2 coins||4195.2 coins|
|Mithril||10% chance||58.5 coins||1755 coins||2925 coins||1696.5 coins||2866.5 coins|
|Adamant||8% chance||136.4 coins||5115 coins||8525 coins||4978.6 coins||8388.6 coins|
|Rune||5% chance||131.45 coins||7887 coins||13145 coins||7755.55 coins||13013.55 coins|
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