Counter Trap
Remove 3 Sentinel Counters from your field; negate the activation of a Spell/Trap Card and destroy it. If you control “Drone Sentinel – Microphone Array”, you can also target 1 non-“Fiber” “Drone” monster your opponent controls; take control of it. You can activate this card from your hand by also discarding 1 card. If this card is destroyed and you control a “Drone Sentinel” monster: Set this card to your field.