Field of View
Card advantage on the table and in players' Hands is extremely important in 2-player games. Since there is less interaction in 2-player Viewpoint games and greater shifts in board position (the quantity and quality of the cards in each player's Field of View) are harder to recover from when there are fewer players to keep their opponents in check, the preferred course of action for experienced players is to use cards that give a 2-for-1 (or better) advantage. That is, cards that steal multiple cards from an opponent's Hand or remove multiple cards from an opponent's Field of View.