Target player reveals his or her hand. That player choose X creature cards among creatures he or she controls controls and creature cards in his or her hand. Exile all creatures chosen this way. (They can not choose creature tokens this way).
The fact that it cant hit tokens and that it exiles the stuff are both side effects of the only way I could find to simply word it. The token part was because I had to say because creature cards exist both in play and in the hand, while creatures just exist in the hand, and tokens aren't creature cards. Originally I was going to have them sacrifice the creatures and discard the cards but I felt exile was easier. If anyone can find an easy way around either of these (especially the token thing) I would be thakfull.