A Disturbance In The Force

Rules text

Once per game, during your deploy phase, 'insert' (face down) into opponent's Reserve Deck; reshuffle. When effect reaches top it is immediately lost, but opponent may not activate any more Force that turn. (Immune to Alter.)

The destruction of Alderaan caused a great disturbance in the Force '...as if millions of voices suddenly cried out in terror and were suddenly silenced.'