Classically Confident Confidanting

Anker is playing against Nite in a Modern PPTQ. Anker controls a Dark Confidant. He untaps, points at his creature, says “Confidant Trigger” and draws a card. Anker proceeds to say “Draw for turn?” Nite calls for a judge and explains that Anker didn’t reveal the card that he put into his hand from the Dark Confidant trigger. What do you do?

This is classic GPE – Hidden Card Error. Nite gets to look at Anker’s hand, choose one card to be placed back on top of the library. Then the Dark Confidant trigger is resolved correctly. Anker will receive a warning for Game Play Error – Hidden Card Error.

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Temple of Oops

At a Modern PPTQ you are the Head Judge of, Ashton is playing against Naomi. Ashton plays his land for turn, a Temple of Abandon. Ashton picks up the top card of his library, looks at it, sets it back down on the table. Ashton thinks, and then picks up the card and puts it into his hand. Naomi immediately calls for a judge. What do you do?
This is a Hidden Card Error, Ashton receives a Warning. Ashton has put a card into his hand when he wasn’t supposed to, and we can’t fix it with publicly known information. Ashton reveals his hand, and Naomi chooses a card from it, since Ashton knew what the card was before he put it into his hand, we return it to the top of Ashton’s library instead of shuffling it away.
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Grim Speculation

You’re the Head and only judge of a Modern PPTQ. Arielle is playing against Nice. Arielle controls a Liliana Vess and he activates Liliana’s -2 ability, searches and finds a card. She then shuffles her library and puts that card on top of it. Arielle then attacks with a Grim Haruspex, and Nick blocks with a Tarmogoyf. They go to combat damage, both creatures die, then Arielle says “draw for Haruspex” and draws a card immediately. Nice reads Grim Haruspex, points out that the card shouldn’t have been drawn, and calls a judge.

What do you do?

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Issue Arielle a Warning for Hidden Card Error. Arielle reveals her hand and Nice chooses one card from there to be put back into the top of Arielle’s library. Remind both players to read their cards carefully.

About to get Domi-nated

August is playing against November at your Modern PPTQ, it’s a third game of the final match. November controls several creatures, he has no cards in hand, 1 life and is fully tapped out. August controls 8 lands, he has 3 cards in hand and 1 life. August casts Domri Rade, activates its +1 ability, looks at the top card of his library for a moment, then grabs it and puts it into his hand. November is about to stop him, but it’s too late. Both players immediately call a judge. August has 2 Mountains, and a Keldon Marauders in hand. What do you do?



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August receives a Warning for Hidden Card Error. August shows his hand to November. November picks a card, and returns it to the top of August’s library. After this August performs the action again and may show the card. If November choses to pick a mountain to put on top of the library it will stay there.

Look Ma, No Hand!

Anya is playing against Natalie on day 1 of a Grand Prix. In game 2 of the match Anya activates her Cryptbreaker‘s first ability, discarding a card and saying “create a zombie.” She searches the Hour of Devastation Bundle box she is using for her deck box for a zombie token, and can’t find one immediately, so takes the contents out of the box and puts them on the table. She searches some more, finds the zombies, deploys them, then returns everything to the box. Returning to the game, Anya and Natalie both discover that Anya’s hand of 4 cards is missing. They call for a judge, and you find 19 cards in Anya’s deck box, separated in a group of 8 and a group of 11, divided by the tokens.

You investigate and confirm that Anya should have 4 cards in hand, based on the game state and number of turns passed.

What do you do?

Anya receives a Warning for Hidden Card Error. She put extra cards into her sideboard, and that action can’t be fixed using public information. Natalie will look at the 19 cards that were in Anya’s deck box and choose four to become Anya’s hand.

An expanded answer can be found here.

Tales from the Cryptbreaker

Antoine and Nancy are playing in a standard Grand Prix event. Antoine, who controls three untapped Cryptbreakers, taps one of them and two swamps, draws a card, and marks down one life loss on his note sheet. Nancy stops him to point out the mistake and Antoine replies, “Oops! I meant to draw a card but I activated the wrong ability. I was supposed to tap my two other zombies instead of the lands. Judge!”

What do you do?

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Antoine receives a warning for Game Play Error – Hidden Card Error To fix this error, Antoine reveals his hand to Nancy and she chooses one card to be shuffled back into the random portion of Antoine library. Antoine untaps his Cryptbreaker and two swamps and resumes play.

Its an AEther Miracle!

You’re the head judge of a Modern PPTQ, where Ace and Niño are playing their match. At the beginning of this turn, Ace untapped, put a counter on his AEther Vial, then picked up the top card of his library and looked at it. Thinking for a bit, Ace put that card face down next to his AEther Vial. After finishing thinking, Ace takes the new top card of his library and adds it to his hand. Niño immediately calls for a judge, and explains the situation. What do you do?


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Ace receives a warning for Hidden Card Error. Have Ace reveal his hand, but not the single card face-down near Aether Vial. Niño chooses one of those cards as an excess card and it is shuffled into the unknown portion of Ace’s library.

Oath Of Whoops

Andrew is playing against Nadine in a Standard PPTQ. During Andrew’s turn he says, “Oath?” tapping a Forest while holding out an Oath of Nissa. Nadine lets it resolve and Andrew draws three cards, and discards an Island and a Forest. Andrew realizes that he resolved his trigger incorrectly and calls for a judge, explaining that he thought he was playing an Oath of Jace. What do you do?

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Andrew receives a warning for Hidden Card Error. The root cause is adding 3 cards into a set (his hand). Return the two discarded cards to Andrew’s hand. Then have Andrew reveal his hand to Nadine, where she will select 3 cards to create the Oath of Nissa set. Instruct Andrew to continue resolving the Oath of Nissa trigger.

A Terribly Tricky Traversal

Amiee is playing against Nico at a Competitive Standard 1k. Aimee casts Traverse the Ulvenwald, searches for a card, and puts it into her hand. Nico points out that she didn’t reveal, and calls for a judge. At this point, Aimee realizes that she didn’t actually have delirium, and tells you that she couldn’t have searched for the card that she did. Looking at Aimee’s hand, you see that she does not have any basic lands there. What do you do?

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Aimee receives a warning for Hidden Card Error. Have Aimee reveal her hand, and Nico chooses 1 card as the card that was searched for. Since that card isn’t a basic land, treat it as excess and shuffle it into Aimee’s library. Then have Aimee resolve Traverse the Ulvenwald correctly, searching for a basic land.

Return to Sender

Alexander and Neena are playing in a PPTQ. Alexander controls two Smuggler's Copters and two creatures. He crews both of his Smuggler's Copters and attacks Neena with them. Alexander points at his attackers, announces “Draw two. Discard two.”, picks up two cards from his library and, before Neena can stop him, adds them to his hand. Neena calls for a judge. What do you do?

Judges, feel free to discuss this scenario on Judge Apps!

As stated in MIPG section 2.3; GPE – Hidden Card Error (in part):

If the error put cards into a set prematurely and other operations involving cards in the set should have been performed first, the player reveals the set of cards that contains the excess and his or her opponent chooses a number of previously-unknown cards. Put those cards aside until the point at which they should have been legally added, then return them to the set.

In this case, the set of cards is Alexander’s hand, and the second card drawn for Smuggler’s Copter triggers was the prematurely added card. To remedy this error, Alexander reveals his hand and Neena will choose one card that Alexander cannot discard for the first Smuggler’s Copter triggered ability. We set that card aside, have Alexander complete the first trigger, and then add it back to his hand before discarding a card for the second trigger. Neena does not receive Failure to Maintain Game state, as she called for a judge as soon as he could have noticed the error.