Son Goten & Trunks, Super Saiyan Tag Team (EX14-04) - Expansion Deck Box Set 14 Battle Advanced

[Auto] If your Leader Card is a yellow "Gotenks : Adolescence" card : When this card is discarded by a [Union-Fusion] skill, choose up to 1 of your opponent's Battle Cards, ignoring [Barrier], and switch it to Rest Mode. You can't activate the [Auto] skill on copies of this card for the turn.