Smoke rune

Ironman verdict

At least 9 monsters drop it. The easiest is Skeletal hand (level 63, 53/2,316); the best rate is Dark wizard (The Zamorakian Undercity) (level 114), at 1/15.2, about 1.3 per kill. You can also make it yourself: it takes 15 Runecrafting and gives 8.5 Runecrafting XP, using Pure essence, Fire rune and Fire talisman. There is one other recipe below. Other sources include Essence impling, Essence impling jar, Vault of Hereditas and Greater demon pyromancer, plus 4 more listed below. Making ten takes 10 × Pure essence, 10 × Fire rune and 10 × Fire talisman and gives 85 Runecrafting XP. Reaching level 15 Runecrafting takes 2,411 XP in total; the Runecrafting calculator counts the actions and materials to any target, and the Runecrafting guide has the Ironman training route. Smoke rune is members-only. 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 4 coins.