Shroom, Ritual at Hand (BT13-144) - Supreme Rivalry

[Auto] If you have 2 or more energy : When this card attacks, your opponent chooses 1 Battle Card in their Drop Area and sends it to their Warp, then you choose up to 1 of their Battle Cards with an energy cost of 3 or less and send it to its owner's Warp.
[Activate:Main] (-), if your Leader Card is a "Mechikabura"-only card and you have 2 or more "Dark Dragon Ball" cards in your Drop Area : Play this card from your hand, then place up to 2 "Dark Dragon Ball" cards from your deck in your Drop Area. Shuffle your deck if you looked through it.