Yes, even the ones you’d prefer they don’t notice.
At FNM, the Missed Trigger policy doesn’t apply, because it’s found only in the Infraction Procedure Guide (“IPG”), which only applies at Competitive and Professional REL events. At FNM, we use only the Magic Tournament Rules and the Comprehensive Rules to govern how the game is played, plus a short document called Judging at Regular REL to tell judges how to deal with common problems.
FNM is about two primary things: Fun and Education. Players are there to enjoy playing the game we all love, and are encouraged to help each other learn more about that game, including rules about card interactions, tournament guidelines, and strategy tips. As a result, penalties for accidental errors are minimal, and players must point out all forgotten triggers except those that say “may” in them. If you’re not sure whether a card says “may” on it, you should ask to read the card. Don’t just ignore it and hope that there’s a “may” in there somewhere. Remember that cheating is a Very Bad Thing at FNM just as it is at the Pro Tour, and since the Comprehensive Rules don’t allow triggered abilities to be missed, purposely letting your opponent do so is considered cheating and will earn a disqualification (it would be cheating at the Pro Tour tour if not for the exception made in the IPG).
Perhaps it seems unfair to have to help your opponent do well in the game when they forget about the 3/3 beast token they should get from their dead Thragtusk, but remember that it goes both ways, so they have to do the same for you when you forget to transform your Huntmaster of the Fells after nobody cast any spells last turn. If you find that you really don’t like pointing out forgotten triggers and helping less experienced players, you may want to look into playing Competitive REL events such as Grand Prix Trials, Pro Tour Qualifiers, and Grands Prix.
Today’s Tournament Tip written by Josh Stansfield