■ [Counter] Destroy two cards on your opponent's field.
You need exist no more.
Q2445: Can I destroy the opponent's cards with this card if there is only one card on the opponent's field?
A: No, you cannot.
If there are not two cards to be destroyed, you cannot destroy one card with this card.
Q2447: The opponent has two cards, and one has the "this card cannot be destroyed by opponent's card effects" ability. Can I cast this card and destroy the other card?
A: No, you cannot. You cannot choose cards that have the "this card cannot be destroyed by opponent's card effects" ability, and if you cannot destroy two cards with this card, you cannot destroy any.
Q2448: When using this card, I target two cards on my opponent's field, if one of those cards leaves the field, can I destroy the remaining card?
A: No, you cannot. If there are not two cards to be destroyed, you cannot destroy one card with the effect of this card.
Q2449: When using this card, I choose two cards on the opponent's field, and one gains the “This card cannot be destroyed by your opponent’s card effects” ability, can I destroy the remaining card?
A: No, you cannot. If there are not 2 cards that can be destroyed, this card cannot destroy 1 card.