Vegeta's Final Flash (BT9-133) [Universal Onslaught]

Product Details

[Activate:Battle] If your Leader Card is yellow : Choose up to 1 of your Leader Cards or Battle Cards and it gets +15000 power for the duration of the battle.
[Auto] If all of your energy is yellow : When you activate this card, choose up to 1 of your opponent's Battle Cards, ignoring [Barrier], and negate its skill for the duration of the turn.