Hi all, hope to get an answer here.

Player A:
Chalice set at 1.
Blood moon in play.

Player B:
Casts Nature's Claim targeting Moon.
Player A misses trigger. Player B says nothing.

Player B states moon is destroyed.
Player A puts moon in graveyard and gains 4 life.


http://archive.wizards.com/Magic/mag...ly/feature/233

Apparently a trigger is considered missed if it falls into an awareness category listed in the above source.

The category Player B quotes is that it is regarding a choice for Player A when it goes on the stack.
Player A states that this "choice" refers to having to make a decision when something goes on the stack (i.e. deciding to reveal top card when counterbalance triggers) and since Chalice is mandatory, we should reference the quote "You aren't allowed to miss your own triggered abilities, and your opponent isn't required to remind you about them." and "If a triggered ability is forgotten (or any other game error is made) and the error is discovered later, players should alert the judge."


So, if it isn't noticed until after the game is over, is it considered bad form, or at worst cheating, if player B allows the moon to be destroyed knowing that the trigger was missed or is the moon destroyed because this scenario falls into one of the categories of "trigger awareness"?


Appreciate it.