Runecraft, often called Runecrafting, is a skill that allows players to craft their own runes for Magic spells.
Essences
Pure Essences
Pure essence can be used to craft air, mind, water, earth, fire, and body runes as well as cosmic, chaos, astral, nature, law, death, blood.
Obtaining
Pure essence can be acquired by mining, from monster drops and Loot chest.