The Shattered Realm: A world wherein all land masses float, literally, in the sky. Think a cross between Serra's Realm and Zendikar and you wouldn't be far off the realms appearance. Obviously, the setting would have a lot of flying creatures, but also spiders and other creatures with reach. Higher up, the floating ground becomes more sparse, while further down it becomes denser. Natural light levels vary, with more light near the top and less near the bottom. Furthest down there is no natural light at all and terrible nightmarish creatures.

(from Krishnath's Original Concept)