Tomonoshin will be unrestricted, and Obstruct put to 1! Check out the details on the official site.
Sealed Black Crest Dragon, Ganmarl
Size 0 Monster
Power: 2000 / Critical: 1 / Defense: 1000
■ [Counter] [Act] If you have a «Black Dragon» [Set] on your field, choose a card on your opponent's field, and you may discard this card from your hand. If you do, for this turn, the chosen card gets power-5000 and critical-3!