Quick-Play Spell
Target 1 face-up monster your opponent controls; look at all cards in your opponent’s hand, then place 1 Sentinel Counter on any face-up card you control for each Spell/Trap revealed this way. The targeted monster’s effects are negated until the end of this turn. If “Drone Sentinel – Microphone Array” is on your field: The targeted monster loses ATK equal to the number of counters placed × 300.