Trunks : Future

[When Attacking] Choose up to 2 Battle Cards with costs of 3 or less in your opponent's Battle Area and return them to their owner's hand.
[Activate Main][Once Per Turn] Reduce the [Ki] of your Battle Area by 1: Choose up to 1 Battle Card in your opponent's Battle Area and reduce its cost by 3 for the turn.
([Ki]: An energy marker placed under a card.)