Reality Warping is the ability that a Caster has. It is the power to change the world around you through mere focus or simple willpower. Most casters don't really have it unless they are a Natural or Cataclyst, needing spells or having a limited version of this ability. In the books Lena is seen doing levitation and shape the mental reality of Del and Reece to make them forget about the Book of Moons. Also she tourned the makeup of the cheerleaders into black marker. One moment, you could be walking down the street, and the next you could be in the ocean. They're able to alter the very essence of physics to their will. Such case is when, in the movie, Sarafine Duchannes started messing with Macon Ravenwood at Lena's hearing, when she possessed Mrs. Lincoln and then made the entire room disappear to where it was then only her and Macon.