Showstopper

Showstopper is a special attack in Paper Mario: The Thousand-Year Door. Unlike most attacks which deal a certain amount of HP, this attack works on a percentage chance of instantly defeating enemies. It is learned when Mario obtains the Garnet Star in Poshley Sanctum at the end of Chapter 6. The Action Command requires the player to press a random sequence of buttons that appear on the screen, in the order they appear. Getting the whole sequence correctly brings up another sequence with one additional button, up to a total of 5 sets of buttons. Once a player completes all five sequences, or they make a single error, they will stop and the attack will commence, its chance of success dictated by the number of sequences the player completed. It is a very effective attack to use on weak enemies, or on a large group of enemies. This move uses 2 SP, and does not affect bosses (with the exception of Bowser's second fight) or some of the stronger enemies, such as the ones that appear in the deep floors of the Pit of 100 Trials whose HP is higher than 10.

The move is very similar to Up & Away from the first Paper Mario.