Special Defense Reduction After Pokémon Uses Move or Buddy Move on Opponent
Passive Skill
Stupefying Strike 1–8
Has a chance (X%) of lowering the target's Sp. Def by one stat rank when the user's Pokémon uses a move targeting that opponent. Has a chance (X%) of lowering the target's Sp. Def by one stat rank after using the user's sync move targeting that opponent.
Stupefying Strike 9
Lowers the target's Sp. Def by one stat rank when the user's Pokémon uses a move targeting that opponent. Lowers the target's Sp. Def by one stat rank after using the user's sync move targeting that opponent.
Stupefying Strike (Japanese: 相手にＰ技Ｂ技後特防↓Special Defense Reduction After Pokémon Uses Move or Buddy Move on Opponent) is a family of skills in Pokémon Masters EX.
Effect
When the sync pair's Pokémon successfully uses a move or sync move, it has a chance of lowering the target's Sp. Def by one stat rank. The skill can range from Stupefying Strike 1 to Stupefying Strike 9, with higher numbered skills resulting in a higher chance of activation. Stupefying Strike 9 will always lower the target's Sp. Def. Currently, only Stupefying Strike 9 is available on scoutable sync pairs. The skill applies to the Pokémon's moves, including status moves and buddy moves, but not max moves.
buddy moves, but not 
max moves.
