Template:Navigation CR State-based actions are game actions that happen when any of a set of improper conditions arise in the game. Whenever a player would gain priority, state-based actions first check for certain game conditions. If any of those conditions are met, the necessary actions are carried out simultaneously as a single event. Then, any triggered abilities go on the stack and the check is repeated. Once no conditions for state-based actions exist, the appropriate player gains priority.
State-based actions should not be confused with triggered abilities, which use the stack. A creature being destroyed by lethal damage, the "legend rule" and "World rule" are all state-based actions.
From the ()