Imagine poker, but you don't lose money and you can have many more cards than the usual poker game. It's addicting and fun, and hitting good hands does get you a lot of money.. that said, it has its own problems.
The UI is nice and clean, until you realize that there's no option for buying all upgrades at once. You have to individually upgrade each card. There's also no automation, which means you will be clicking a lot. There's a "buy max" setting, but it doesn't work with dealer upgrades.
The prestige (add flat multi) layer is nice, although it speeds up a lot after the first few prestiges due to the sheer amount of brute forcing your good hands. Then, you ascend and replace one of your cards with a black card that has really high value. It's a really good way to keep the poker theme without adding another flat multi. This is the point where you can ascend every 3-5 prestiges. You'll be clicking upgrades A LOT, to the point of not reading anything and just clicking upgrade. The strategy here is to just upgrade the first few cards and forget about the rest.
It's fun, you should give it a try. Just bring an auto clicker if you're not prepared to click a lot.