Helbram: Actual Form (SDS/SX03-039 C) [The Seven Deadly Sins]

[AUTO] At the beginning of your opponent's attack phase, choose 1 of your characters, and that character gets +500 power until end of turn. [ACT] Brainstorm [(1)] Flip over 4 cards from the top of your deck, and put them into your waiting room. For each climax revealed among those cards, perform the following action. "Search your deck for up to 1 "Britannia" character, reveal it to your opponent, put it into your hand, choose 1 card in your hand, put it into your waiting room, and shuffle your deck."