I tried as a joke to make a system for playing in the setting of a Bulgarian urban fantasy series. About 15 minutes after putting pen to paper, I realized I'm writing a modern, heavier version of Sorcerers of Ur-Turuk/Ars Magica, except I'm using 2d6.
Now I'm wondering whether the author has played SoUT or AM. Or maybe Talislanta 4? He's in the right demographic.