SS Son Goku, Trusted Ally (BT13-095) [Supreme Rivalry]

Product Details

[Auto] When this card is played, choose up to 1 of your mono-yellow "Trunks : Future" cards with an energy cost of 3 or less in Rest Mode and switch it to Active Mode.
[Activate:Battle] (Y), if you have a yellow "Trunks : Future" card with an energy cost of 3 or more in play : Play this card from your hand, and you can't play copies of this card for the turn.