[quote=@Turboshitter]
I'll have something up once I think of something! Would shapeshifting be a bit too vanilla for X-Men? It's kinda hard thinking of a power they haven't already done :P
[/quote]

I wouldn't worry so much about trying to find a power that's never been used before, nor would I worry about what might seem vanilla. Whatever sounds fun to you is what matters; and honestly this game is going to be character focused so the power is just one part of a good character :).