Dark Diviner

1 DARK Tuner + 1 non-Tuner Insect-Type monster
This card cannot be destroyed by battle. When this card declares an attack, if the ATK of the attack target is higher than this card: The ATK of the attack target becomes equal to this face-up card's current ATK. This change lasts until the end of the Battle Phase. When this card destroys an opponent's monster by battle and sends it to the Graveyard: Send the top 3 cards of your opponent's Deck to the Graveyard.