Tomonoshin will be unrestricted, and Obstruct put to 1! Check out the details on the official site.
Death Count ~Serenade~
■ You may only cast this card if you have a «Black Dragon» monster on your field. ■ [Cast Cost] [Pay 2 Life] ■ [Set] ■ At the end of your opponent's turn, put the top card of your deck into this card's soul. Then, if there are three or more souls in this card, put this card from your field into your drop zone, and your opponent's life becomes 1!