Cooler, Sibling Cruelty
Permanent For each green Unison Card in your Drop Area, reduce the energy cost of this card in your hand by 1.
Auto. When this card is played, you can't play copies of this card this turn. Additionally, you may place 1 green Unison Card with a specified cost of 3 or less from your Drop Area at the bottom of your deck. If you do, your opponent discards 1 card from their hand.