Gokua, the Calamity (BT13-049) [Supreme Rivalry]

Product Details

[Auto] When this card is played, look at up to 5 cards from the top of your deck, add up to 1 "Boujack Brigade" card with an energy cost of 3 or less or up to 1 blue Unison Card with a specified cost of 4 among them to your hand, then shuffle your deck.
[Activate:Battle] [Once per turn] (1) : This card gets +11000 power and [Critical] until the start of your next Main Phase.