A Roil Elemental is the essence of landfall—it's the power of Zendikar's cartography-defying nature made manifest. The Roil is the vengeful rage of Zendikar, the force that changes the terrain faster than an explorer can conquer it. The Roil Elemental is a being made from this very essence of change, a vortex hungry enough to devour the status quo. It's very, very dangerous for living things to come near it.
A vortex that devours everything -even the souls of the living.