Mithril arrow

Ironman verdict

At least 9 monsters drop it. The easiest is Armoured zombie (level 21, 8/128); the best rate is King Black Dragon (level 276), at 7/100, about 18 per kill. You can also make it yourself: it takes 30 Fletching and gives 112.5 Fletching XP, using 15 × Mithril arrowheads and 15 × Headless shaft. Other sources include Broken arrow, Giant Oyster, Casket (CS Week) and Security casket (CS Week), plus 4 more listed below. Making ten takes 150 × Mithril arrowheads and 150 × Headless shaft and gives 1,125 Fletching XP. Reaching level 30 Fletching takes 13,363 XP in total; the Fletching calculator counts the actions and materials to any target, and the Fletching guide has the Ironman training route. One recipe uses Mithril arrow: Mithril fire arrows (unlit). It is worn in the ammunition slot at tier 30 as ranged gear; compare it with every other piece on the Ammunition list. Mithril arrow is available on free-to-play worlds too. It is tradeable on normal accounts, but an Ironman cannot use the Grand Exchange or trade for it, so the sources on this page are the whole list. High Alchemy turns one into 45 coins, which is 31 less than the shop price, so buying it to alch does not pay.