SS Son Goten, Primed for Fusion (P-225) [Promotion Cards]

Product Details

[Counter:Attack] Negate the attack, then play this card.
[Permanent] During your opponent's turn, if you have a yellow Unison Card in play, reduce the energy cost of this card in your hand by 2.
[Auto] Choose 1 card in your hand and discard it : At the end of your turn, return this card to its owner's hand.