Number 16: Shock Master (CT09-EN014)

3 Level 4 monsters

Once per turn: You can detach 1 Xyz Material from this card to declare 1 card type (Monster, Spell, or Trap); that type of card (if Spell or Trap) cannot be activated, or (if Monster) cannot activate its effects, until the end of your opponent's next turn.

Fairy / Xyz / Effect, Collectible Tins 2012 Wave 2