Legion’s David Haller is one of the most powerful mutants in the X-Men universe, with the powers of telepathy, telekinesis, and the ability to alter reality (no big deal) in his arsenal. But he isn’t the only mutant with cool powers on the popular FX show. Rachel Keller’s Syd can swap minds with anyone she touches, while Jeremie Harris’ Ptonomy is a “memory artist,” able to remember anything and transport people back into their memories. In the video above, we ask Keller and Harris what they would do if they had their character’s powers.