Dark King Mechikabura, Ruler of the Demon Realm BT21-139

[Auto] If your Leader is a "Mechikabura"-only card : When this card is played, look at your deck, add up to 1 "Dark Dragon Ball" to your hand and place up to 1 in your Drop, then shuffle your deck.
[Activate:Main] [Limit 1] (-)(-)(-), if your Leader is a "Mechikabura"-only card, your opponent has 3 or more energy, and you send this card from your Drop to your Warp : Send up to 1 of your opponent's Battle Cards from their Drop to their Warp, play up to 1 black "Mechikabura" with an energy cost of 8 and a power of 30000 from your hand or Drop, and that card gains [Barrier] for the turn.