The overall design here is sound. You cast spells using poker numbers/hands as your mana source, and aim at the enemy you choose and progress forward.
But, the design here is set up in a way where you never feel powerful, it never feels like you are making the correct choices with rewards, and setups of your spells feels too weak.
I got 10 hours out of it and overall don't recommend it just because of how the game FEELS, which is lousy.
Maybe try it on a sale, but pass otherwise.