Trafalgar Law [Royal Blood]

[DON!! x1] [Activate: Main] [Once Per Turn] If the total cost of your Characters is 5 or more, you may return 1 of your Characters to the owner's hand: Reveal 1 card from the top of your Life cards. If that card is a "Supernovas" type Character card with a cost of 5 or less, you may play that card.