During your Main Phase: You can choose the 1 Effect Monster your opponent controls with the highest ATK (your choice, if tied), and neither player can activate that monster's effects on the field this turn. When your opponent activates a monster effect on the field (Quick Effect): You can Tribute this card from your hand or face-up field; Special Summon 1 Machine "Rescue-ACE" monster from your Deck. You can only use each effect of "Rescue-ACE Impulse" once per turn.