That’s “die” as in the singular of “dice,” in case that wasn’t clear. I saw this ten-sided die at GenCon and took a photo. Not sure what you’d use it for – to pick which one to obey or disobey on a given day?
There were some impressive companies at GenCon that make custom dice. I still haven’t figured out what sort of custom dice I need for the purpose of teaching Biblical studies. But when I do…