King Cold, Hail to the King (P-379) [Promotion Cards]

Product Details

[Counter:Attack] Negate the attack and play this card.
[Permanent] For each green Unison Card in your Unison Area and Drop Area, reduce the energy cost of this card in your hand by 1.
[Auto] When this card is played, your opponent can't attack for the turn unless they discard 1 card from their hand each time.