Morph, Should I remind to my opponent?

Im attending to PTKTK, and i have a question just to verify if i'm correct, as is something i'm being asked about, and i would like to have an official answer.



The situation is:



My opponent controls a Morph, and he just won me the game, at the end of the game, i see that he's taking his cards but i don't ask or stop him before he puts his morph together with the rest of the cards. Then i call a judge.



According to 707.09, “At the end of each game, all face-down permanents and spells must be revealed to all players”.

so he's breaking this rule, and in the GRV Definition. “An error that an opponent can’t verify the legality of should have its penalty upgraded. These errors involve misplaying hidden information, such as the morph ability or failing to reveal a card to prove that a choice made was a legal one”



So my opponent is receiving a Game Loss. If a Judge comes, and i say to him, I knew he was taking his cards but i didn't want to call until he definitely took them, I'm receiving any penalty?



My guess is I don't because i call at the first time an infraction was committed.



Also wanted to know. If I won and if I lost. Is the Game Loss being applied in the game where he didn't revealed the card?, This is because if he does after he lost the game, he could potentially take the risk, because he's only a receiving a “Warning” even if it appears as a Game loss in the Tournament record.



“Game Losses are applied to the game in which the offense occurred unless the players have begun a new game or

the tournament is between rounds, in which case the loss is applied to the player’s next game”



Thanks!