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Increases the priority of non-attacking moves by 1. However, moves still circumvent Quick Guard. If a move such as Assist or Metronome calls a two-turn attack such as Fly, the second turn of the move does not fall under the effect of Prankster.
The ability is a powerful one on any Pokemon, although most notable on support and SubSeed Whimsicott. Thundurus can launch rapid Nasty Plots before being Taunted, and Sableye's previously negative ability is essentially reversed. It is very difficult to find a situation where this ability is not preferred, as it can give so many advantages for the team, depending on what move is accelerated.
Found in Dream World