Custom character sheet for system not listed

I was wondering if there was a way to make a custom system in order to make a character sheet for something not listed for example, Magic the Gathering Arena of the Planeswalkers - is a board game I own but I would like to make characters and board game tiles to play with friends during this lock down.

On the game creation dropdown, go ahead and select “Custom / Homebrew / Other”.

That should let you create the game, then you can create a sheet for the system, by uploading a .pdf and following the instructions here.

Once you have made that template, go ahead and post it here per these guidelines, so the next person would also have access to it.