Darkstone

Dotted around the landscapes of the world are floating islands. These islands contain a material, quite common, called Darkstone. When light shines on this material it turns into a light and durable, however without light it become fixed and unmoving.

Many Elves remember a time when the Elves, Humans Dwarves and Orcs had floating islands of their own before the first Cataclysm 600 years ago. When the Infernal cannons exposed their darkstone and brought down their Isles.