Check at my post above the yours... this is the 2nd time i find this bug and nobody fix it, and like us there a lot of people with this trouble, it might be even a problem with the card or pack we're buying because a friend of mine also had the same problem with an Ugin we both buy a time ago. My advice: keep playing and winning the game coin and buying things but do NOT put your real money on it at least until they fix it and announce it.

Same here, noticed because i came back from a year pause, wanted to craft some historic brawl deck and found myself missing cards i was SURE i had, including commons that i drafted many times during past events, or rare i built some deck with (Like mishra's self replicator, or Vona Butcher of Magan).
Guess there's no way for this to get a solution, but **** this feels cheap.

Just spent $85 on cards. Some brand new are in a saved deck but not in my whole collection when building decks, ALL NEW ALCHEMY PACKS AS OF THE PAST TEO DAYS WTF. Not cool.

I've had this happen several times now. The first time was about a year ago. I opened i dunno like 20-30 booster packs, and two of the cards I got were Uro Titan of Natures Wrath and the other one was Koma, Cosmos Serpent. I was excited about the Koma since I wanted to build a deck with it. When I went to my library it wasn't there. Filed a complaint and Wizards told me that I had never received a Koma and it wouldn't be possible for it to get vanished. ******* I guess. Saw the Koma 100% aswell as the Uro. **** Wizards I guess.
Now this **** happened again. This time with All Seeing Arbiter. I drafted the card before from a booster, it was part of my library (I've seen it several times while looking through my mystic rares). Then two or three weeks ago I opened a booster, got another All Seeing Arbiter, it DIDN'T show a first tag, but after checking my library for it, there was only one. I made screenshots of it and send them to the "customer support". They again told me it wasn't possible for cards to get lost, and that I had only received one copy of it. I have ******* pictures to prove it. **** Wizards I'm done playing their ****.
I'm thinking about filing a lawsuit because that's just ******* fraud, plain and simple.
**** Wizards

Once I noticed that a Wayward beast was gone. I remember this because I really needed it and at night I pulled it and I was very happy to be building a deck with it in the next day. I couldn't find it and so I was confused. I ignored this, but recently I learned to filter the non collected cards and I saw I was missing Cemetery Prowler... Some months ago I ran a deck with this card... Wtf? I see with this filter other cards I am missing. Sorry but this is the final drop for me, not spending another $ on this. Is anyone looking at this?

After 2020 coreset, i stopped the playing. Nowadays i started again and can't find any of my old cards. I played on computer and now i am playing on ios.
When i feel close to buy mastery pass or booster or smthng like that. I ask myself if i lost my cards paid by real money, again. That would be really annoying.
Simply until i get my cards back (cuz they are mine), i will not spend money for my collection.

I restarted the game after a long break and I see that there are a lot of cards missing from my collection.
Some of the missing cards are still in the game, i can find them when looking for not owned card, I already crafted some of theses, but they diseapeared from my own collection.
I guess it was a mistake to came back. Just uninstall.

I played some mtga back during Core Set 2019 and I'm looking at one of my old decklists and the only cards I still have are 3 copies of Rabid Bite. 57 other cards are just, not in my collection, including basic lands? Apparently Llanowar Elves have been removed from the entire game, cause I can't find them even if searching for cards I don't own. I can't tell what's a bug and what's the genuine deletion of cards that I "owned"

EDIT: Alright I found where to change set legality, but my decklist screen told me that there were only 26 non-format cards, I have no idea where that number came from since apparently even my basic lands are not standard compatible

EDIT 2: Also Gigantosaurus is literally legal in Standard, but my core set 2019 copy of it isn't? This isn't how the game works what is actually going on

Same problem for me, cards are disappearing from my collection . What a waste of money and time. I guess ["Thieves" of the Coast] don't give a f*** fixing some stuff in this game that are essential for players. And on top of it Game crashes randomly for no apparent reason when playing ranked matches and getting a loss . Match making is another joke, nicely put in the game to encourage us to keep spending money in this broken game.This seems like a robbery to me and i wonder if there is a way to take legal actions against the ["Thieves" of the Coast] gang. I want my money or the cards that i have paid back.

I've the same problem too!!
I've already reported it but it is never fixed.
I've finished of all my wildcards and cannot build decks with cards that were already in my collection because they are gone now.

When I open a pack and get a new card, most of the time I cannot find that card in my collection. What is the deal???

mee too, i lost wild card for cards that after some months vanished. i also lost cards from draft or card packs.

Around the end of January 2022 i noticed when ii logged on that i have tons of cards missing in my collection. I tried to open a ticket with Mgto and still havent gotten a response yet. I hope i didnt lose them because if i did then i think am quitting the game, i spend tons f money and time on this game to start all over. If anyone here found the answer then please leave me a message thanks

yeah i see you ARE losing a lot of customers.

well a lot of time and points went into getting specific cards. they are historics, i cqant see a single one. this has been a waste of my time. i will not play a game the ROBS me of hundreds of hours.
well not play this **** anymore. uninstalled

Also missing cards, was told that the game “couldn’t lose them” unfortunately looks like a lot of people are having the same issue. I’ve decided that if my cards are disappearing it’s not really fair to me to keep buying packs. Sucks cuz I like this game.

Just came back to the game after 8 months or so, and several of my decks that I used to at with are now showing missing cards. Very annoying.

Literally just looked and my 4 Thalia's Lieutenant are all gone. Why is a key card to a deck I run all the time missing

Same, just noticed some card i got from draft are missing from my collection

I have noticed completed decks now have missing cards... Same problem.