Free software, as defined by the fsf, preserves the users freedom to study, change and distribute the software. The right to study entails that the source code be made available: Wikipedia article. Calibre is licensed as GPL3, thus it is free software as defined by the fsf.

Open source is a subset of free software. Free software is always open source.

both GNU emacs and vim can have autocompletion powered by the same language servers that vscode uses. They support the same features (jump to definition, rename symbol under cursor etc etc) as well.

Calibre is free software

What do you expect from those games? Do you want to play magic or are you going for a free for all commander experience?

I’ve also been experimenting with an equipment deck lately but it never seemed like a good enough contender for anything but the most casual games. My effort is here, I’m going for a double strike theme as you can see. I try to get more value from the saboteur effects.

I’d consider removing the benevolent blessings in favour of apostles blessing if you’re afraid of losing your creatures. Goblin gabeleer seems like a bad creature to me except when it’s able to end the game as it will die before providing you enough value otherwise.