Brook OP15-022 (Adventure on Kami's Island)

Under the rules of this game, you do not lose when your deck has 0 cards. You lose at the end of the turn in which your deck becomes 0 cards. [Activate: Main] [Once Per Turn] Trash 4 cards from the top of your deck. Then, if your deck has 0 cards, set up to 1 of your Characters as active.