King Cold, Supreme Ruler (BT13-082) [Supreme Rivalry]

Product Details

[Counter:Attack] Negate the attack and play this card.
[Permanent] Reduce the energy cost of this card in your hand by 1 for each green Extra Card in your Battle Area.
[Auto] When this card is played your opponent can't attack Leader Cards for the turn unless they choose 1 card in their hand and discard it each time.