Australian actress Samara Weaving, known for her role in the horror franchise 'Ready or Not', has been cast as the mutant 'Emma Frost' in Marvel Studios' next 'X-Men' reboot, reported Deadline. Frost is a telepathic mutant and was last seen in Century Fox's 'X-Men: First Class' in 2011. Samara has also been part of horror films 'Mayhem' and 'The Babysitter'.