When does a player receive priority to play a reaction during their opponent's turn, specifically when the opponent plays a unit to their base, moves a unit to a battlefield they already control, or passes turn?

Ruling: A player does not receive priority to play a reaction when their opponent plays a unit to their base (without abilities), moves a unit to a battlefield they already control, or passes turn.

Nuances:

• Priority windows only occur if the unit has a "when you play me" ability or a "when I move" ability
• Without such triggered abilities, none of these actions create a priority window for reactions