Round End and Round Start effects have their trigger icon highlighted by an animated circle to indicate that they will activate at the end of the current round or the beginning of the next, respectively. The icon will dim if the condition can longer be met for the round, such as 'The first time each round' triggers like 6 Sejuani.
On the board, units or landmarks with triggers that continually listen for a condition will be marked with the Trigger icon ( ) alongside other visible keywords. Triggers are effects typically prefaced with 'When' or 'Once', or a trigger keyword ( For more details, see Trigger Keywords), indicating that a condition must be met before the trigger is activated.