Majin Buu, the Neverending Absorber

Choose 1 card under your 《Majin》 Leader Card and place it under this card : Play up to 1 mono-green ＜Majin Buu＞ card with an energy cost of 4 and 15000 power from your deck or Drop Area on top of this card, then shuffle your deck if you looked through it.
When this card is played, look at up to 5 cards from the top of your deck, add up to 1 green 《Majin》 card with an energy cost of 5 or less among them to your hand, then shuffle your deck.