Curse Powder
If the Pokemon that Curse Powder is attached to is your Active Pokemon and is Knocked Out by damage from an opponent's attack, put 3 damage counters on the Attacking Pokemon.
Card rule
Attach Curse Powder to 1 of your Evolved Pokémon (excluding Pokémon-ex) that doesn't already have a Pokémon Tool attached to it. If the Pokémon Curse Powder is attached to is a Basic Pokémon or Pokémon-ex, discard Curse Powder.
Unseen Forces