Scenario: Player A has a Dr. Doom: Victor Von Doom and a She-Thing in his Front Row. Player B has a Dr. Doom: Diabolic Genius in his Front Row.

Player B plays Mystical Paralysis from his resource row, targeting his opponent's Dr. Doom and then passes priority. Player A responds by flipping a Common Enemy, so Dr. Doom and She-Thing are on the same team, making Dr. Doom's effect active, so Player B unable to use Plot Twists from his resource row.

Would Mystical Paralysis still resolve? Or would Rule 505.2 put Mystical Paralysis face-down, because Dr. Doom prevents it from being played?

505.2 If at any time during these steps the player is unable to finish playing the effect, the entire action is rewound and the game state reverts to the game state before the action was attempted. The player attempting to put the effect on the chain gets priority. If the player was attempting to play a plot twist from his or her resource row, the plot twist is turned face down.

~Tombster212

It would still resolve because it has already been played by the time the team-up is in effect. Played simply means put on the chain. It doesn't mean resolved. Players don't get priority during the announcement of an effect, so payment powers and plot twists cannot be used to make 505.2 happen. 505.2 deals with situations such as trying to recruit a 5-drop character with only 4 resource points or trying to play Savage Beatdown with only [edit]3[/edit] resources in play.

uhh, isn't SB a 4 threshold PT?

Oops. I was on a "4" kick. :)