Tomonoshin will be unrestricted, and Obstruct put to 1! Check out the details on the official site.
Secret Sword, Dragon Vanquish Formation
■ When your opponent calls a monster with "Dragon" in its attribute, if this card is in the soul of "Secret Sword, Lethal Formation", you may cast it. (You may not cast it from your hand.) ■ [Cast Cost] [Pay 2 gauge] ■ [Counter] Nullify the call and deal 2 damage to your opponent!