Privacy
This site doesn't ask who you are. It counts visits itself, with one cookie of its own and nobody else's trackers.
What this site doesn't do
- No accounts and no sign-up.
- No ads, and no ad or analytics companies. Nothing on these pages is loaded from anyone else.
- Nothing that follows you to other sites.
What it counts
We count visits ourselves, to see which pages get used and what breaks. The counts stay in our own storage and aren't shared or sold. For a visit, the site records:
- the page, how long it was open and how far down it was read
- the site you came from, if you followed a link here
- your country and region, your time zone, the kind of device and browser, and your browser's language
- what you do here, such as opening a pack, turning a card, adding a card to a deck, or following a link to Discord or Roblox
- what you type into the card search, and the name you give a deck when you save or share it
- how fast the page loaded, and any error in its scripts
Don't put your own name or contact details into the search box or a deck's name. Anything that looks like an email address or a phone number is removed before it is stored.
The cookie
The site sets one cookie, named mv. It holds a random number and the date of your first visit, and it is how we tell a returning visitor from a new one. It lasts two years, only this site can read it, and it says nothing about who you are.
If you are in the European Union, the European Economic Area or the United Kingdom, the site asks before setting it. If you say no, or don't answer, you get no cookie and your visits are counted a day at a time, so they can't be joined up.
Your internet address isn't stored. So that one visitor isn't counted twice, each visit carries a code made from the address, your browser and the date. The code changes every day, and the address can't be worked back out of it.
Switching it off
You can switch counting off for this browser here. That also deletes the cookie.
If your browser sends Global Privacy Control or Do Not Track, it gets no cookie. Its visits are still counted, but each day's separately, so they can't be joined up.
Counts are kept for two years.
Decks you save
The deck builder keeps your saved decks in your own browser's storage, on your device. They are never sent to us. Removing this site's data in your browser removes them.
A link you copy from the deck builder holds the deck's cards and its name in the address itself. Anyone you give the link to can see that deck.
Where it runs
The pages are delivered by Amazon CloudFront and the counts are kept in our own Amazon account. CloudFront's own request logs are switched off.
Roblox and Discord
The game runs on Roblox and the community is on Discord. Each has its own privacy policy, and a link from this site takes you to them. Discord is for ages 13 and up.
Last changed on November 13, 2026.