Capricious Onslaught (BT9-085) - Universal Onslaught PreRelease Cards

[Activate:Battle] Choose up to 1 of your Leader Cards or Battle Cards and it gets +10000 power for the duration of the battle; then, if it's your turn, choose up to 1 of your opponent's Battle Cards and place it under a 'Majin Buu' card in your Battle Area.