This is the perfect casino game to add to your server! It's very customizable, and has many different functions, which put together makes it great. You can change the amount of dice to choose from, the prefix, colors, GUI layout, and the chances of for rewards, and dice rolling + many more!

In addition to this, it's super easy to setup, and doesn't require any addons besides Skript itself!

I'd highly recommend trying it out. More information on the documentation page.