Dormant Potential Unleashed

If your Leader card is mono-green : Choose any number of your opponent's Battle Cards that add up to a total energy cost of 2 or less and KO them. Additionally, you may choose 1 green card in your hand and discard it. If you do, your opponent can only attack once more this turn.
If you have a green Unison Card in play, you can activate this card's skill from your hand without paying its energy cost.