A writer's block shatterer. Powerful simplicity which stands on its own and integrates well into pretty much anything else, if desired. I have an ongoing, meandering solo tale (will our nameless, successful avenger avoid pursuit and make it back home to his wife's grave?). I also used it to handily generate a quick backstory with some solid narrative hooks for a tradgame character.
The self-contained nature of the online card picker means you can save the page as a .html file and use it on any device of your choosing, connected or not. This helps neatly avoid the necessities of sorting and shuffling cards to begin or to continue a story, and minimizes the potential distraction of notifications from Online (for me anyway). I may add in the aura, oracle, city, and a couple other custom tables for myself at some point in the future, but mostly I'm happy the picker exists at all.
Do give this a buy, if you can.