Was thinking about a similar concept to the Cards Against Humanity "blank" card, which allows you to write in your own answers, but as a Joker.
I think the only way to get this to work would be either to have preset phrases you either select or have randomly chosen at an interval of time.
So for example, you could have different verbiage phrases (i.e "held in hand", "is destroyed", "has Enhancement") to choose from that either are changeable at different times (like once per round/ante/etc.) or that automatically shuffles the verbiage at a similar interval.