SS2 Trunks, Heroic Prospect (P-219) [Collector's Selection Vol. 2]

Product Details

[Counter:Attack] Negate the attack, then play this card.
[Permanent] During your opponent's turn, if you have a blue Unison Card in play, reduce the energy cost of this card in your hand by 2.
[Auto] When this card is played, your opponent can't attack with Battle Cards with energy costs greater than their current energy for the turn unless they choose 2 cards in their hand and place them at the bottom of their deck in any order.