americanmeatpie asked:

Now then, in math leaders, would you lose the game if you played with a 3 or 5 card deck?

You would lose after resolving mulligans.

How do I know this? Well, fun fact: you can do this right now if you Karn enough cards away and then restart the game. If they have 6 or fewer cards that aren’t Karned, they’ll instantly lose the game after mulligans - regardless of how much they mulliganed.

Now there’s a Magic achievement for you to all try and unlock. :)