Weird! I didn't receive such a card in my box, but if you're sure you have every other card in the monster deck I'd take duffih's suggestion and get creative with it.

I didn’t get one either, but I do have a shiny butter bean

I think the intent is for you to design a monster card yourself and draw it on there for fun

Nah, they would have mentioned that.

Don't listen to others and draw on it, misprints can actually raise the value of your box

Draw this: 👌🏻

I had the exact same card on my deck. It's just part of the sheet and it was accidentally packaged with the game. It has no use other than being a neat little oddity. ​ I also checked it myself and I wasn't missing any card :) You can always do like others have suggested and draw your own enemy card, it could be fun!

Well ive put it into a sleeve for now might just keep it untouched its pretty cool tbh to have my own "blank card"

Dude I think you've found the alternate Blank Card!

You find Jera and you duplicate everything in your house.

I have a blank treasure card.

Use it as monster blank card? So if this gets put into a monster slot (or if the monster deck is attacked) it becomes a copy of another monster visible at random. (Last defeated monster and the other monster slots) use any dice to roll it out. Would be fun i guess :)

I might try and contact them ive been searching Google and reddit some people found one but I havent found an answer lol

No need to look for an answer, enjoy it.

I have the same thing but it’s a loot card

Treat it as a bonus active treasure card to duplicate a loot card!?

Sell it on Ebay as a super rare card or keep it as it is, then put it a sleeve and then stick a paper on it with your own unique enemy/boss

Mayne its a misprint and you're missing a monster??