Alright—one idea—but, hey, do you really need more than one if it's a great one? Clairvoyance is just super great. So, how does he perceive the future? Is it in a thought bubble visual? Does he have a flash of a vision? Does he see doubling in his vision (i.e. does he see both present and future overlaid simultaneously)? You might consider coming up with three different variations based on that one concept.