New Enchantment Type: Rune

A rune is a purely a visual enchantment. The purpose is simply to stand out. They do not give the enchanted glow effect, where the item is tinted purple and waves of magic appear on it.

An example:
Earth melter. Can be put on a pickaxe. The particles from a broken block will be tinted slightly more red and give off a weak glow. While breaking with this, the cracks are also tinted red, rather than the gray. The block being broken gives off faint light. While breaking it, it will slightly smoke and occasionally pop a lava particle.