355.10.d. It is programmatically selected based on its characteristics rather than chosen by the spell or ability’s controller. e.g., “Kill all units at a battlefield” targets a battlefield, but does not target any units. e.g., “Kill all units at battlefields” doesn’t target anything. e.g., “Destroy a unit. Its controller draws 2 cards” targets the unit, but not its controller. e.g., “Ready your legend” doesn’t target anything, because you can only have one legend. e.g., “Ready a friendly legend” targets a legend, because in a 2v2 game there are two friendly legends. e.g., “Recycle all cards in your trash” doesn’t target anything, because it affects all cards and you only have one trash. 355.10.d.1. This exception applies solely to objects for which no choice is ever possible. 355.10.d.2. This exception does not apply to objects that are the only valid choice at the moment a spell or ability is placed on the chain, but which would require a choice under other circumstances. e.g., “Kill a unit at a battlefield” always targets a unit, even if that unit is the only unit currently at a battlefield.