"...and now they're trying to make a brick wall on my property fight a dinosaur to the death."

Flavor Judge

{T}: Choose target spell or ability that targets a permanent you control. Then ask a person outside the game if the story of what will happen makes sense. If they say no, sacrifice this creature and counter that spell or ability.

The List (Unfinity Foil Edition)

Unsanctioned

{T}: Choose target spell or ability that targets a permanent you control. Then ask a person outside the game if the story of what will happen makes sense. If they say no, sacrifice Flavor Judge and counter that spell or ability.

If the outside person says the story makes sense, nothing happens. The spell or ability will resolve (unless something else happens in response). If you control more than one Flavor Judge, or if you have a way to untap it, you can try again with a new outside person. While we can’t stop you from trying again with the same person, we encourage you to really think about whether that’s a good use of everyone’s time.

While players are discouraged from trying to overtly influence the outside person toward a desired answer, you may use tonal inflection, gestures, and the like to make your telling of the story more interesting. Simply explain what’s going to happen and let them decide if it makes sense.