How should missed triggers be handled at a Summoner Skirmish event - should players call a judge immediately or inform their opponent first?

Ruling: You should check with the judge before the skirmish what their missed trigger policy is, as different events may follow different approaches ("Houston" style vs. rules as written).

Sequence:

• Before the event starts, ask the judge what missed trigger policy they're using
• If opponent misses a trigger and takes another game action, inform them the trigger was missed
• If they accept it, continue playing
• If they dispute it, call a judge

Nuances:

• Under "Houston" style rulings, "invisible" triggers (ones that don't affect game state prior to certain game actions) aren't missed until they would have an effect on the game state
• "Visible" triggers or invisible triggers that are too late are missed immediately
• Under rules as written (RAW), triggers are missed once the opponent takes a game action after the trigger would happen
• You would probably not get failure to maintain game state for not immediately calling a judge on a missed trigger