Nature rune

The nature rune is required for a small number of spells which change the state of matter, be it an item you are holding, or in some cases, an opponent.

With earth and water runes, and increasing numbers of natures, you may convert bones to edible bananas, or root your opponent to the spot with bind, snare, or entangle.

With fire runes, you may cast the alchemy spells to convert an item to gold, or the superheat spell to smelt a bar without a furnace.

For non-members, the main source of nature runes will be NPCs that drop them, as most things that drop runes may occasionally drop nature runes. There is a lava-surrounded island in high level wilderness where nature runes may be telegrabbed, but that may be poor value for the law runes used in telegrab. For members, they may be purchased in the Mage arena