More cards missing after 12/5 update

more cards now missing after 12/5 update

Same for me my nzoth disappeared after the latest patch

Same here, playing on Android. Now I’ll check on desktop.

Аналогично, смотрю с ноута.

It was “Doom in the Tomb” event.

23 cards from across Hearthstone history are temporarily stepping out of Wild and back into Standard. To ensure that everyone can participate in this meta-mixing event, we’ll be granting everyone free copies of each card (these copies cannot be disenchanted or crafted) so they can add these heavy-hitters to their decks and get straight into the action. These cards will be considered “event” cards, which essentially means that they’re temporary copies and not permanent additions to your collection. Even if you already own the cards you’ll still receive these event copies, and when the event ends they’ll disappear.

yeah but I had it before the event but now it can’t be found in my collection

Did you toggle your collection to show wild cards (since it’s no longer in standard it won’t show up unless you select “All cards” from the menu)?
I had the same with Sylvanas, thought she disappeared because when I entered the card name it came up blank until I changed it to display all.

I found it on my PC version. I play wild and for some reason it removed it from my wild deck and I found it manually in my collection and put it back.

Same here, LOTS of cards missing (shadow word pain/death, Lightbombs, many others).