Krillin, Potential Unlocked

During your opponent's turn, if your Leader Card is a green 〈Son Goku〉 card and your life is at 4 or less, increase the energy cost of this card in all areas by 3.
When this card is played, choose one?
・ Look at up to 5 cards from the top of your deck, add up to 1 green Unison Card with a specified cost of 2 among them to your hand, then shuffle your deck.
・ This card gains until the start of your next turn.