Brook (Leader) - Adventure on Kami's Island (OP15-EB04)

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.