This card’s effect targets a monster, so you select the target at the activation of the card. You may select a face-down monster, or a monster on the opponent’s side of the field. If you target an opponent’s monster, and then take control of it with “Change of Heart” and attack and do Battle Damage to your opponent, he/she will discard a card. If you target an opponent’s monster, and attack that monster with a weaker monster, causing Battle Damage to yourself, no one will discard a card. The monster targeted by your “The Secret of the Bandit” must deal Battle Damage to the opponent’s Life Points for the effect to activate.
If the monster targeted by this card attacks directly and deals Battle Damage, this card’s effect will activate and the opponent must discard 1 card.
If you activate multiple copies of this card targeting the same monster, the opponent will still only discard 1 card when the monster deals Battle Damage.