The game concept and the vision are solid in combining the deckbuilding, roguelite and the somewhat Civilization overworld management system that all flows together well.
The core gameplay revolves around Gwent + Hearthstone formation of typically three chosen ally units and spell cards in hands which you use mana resources to cast, and choosing how to minimize getting your units from getting killed while advancing the stages as far as you can.
Having playtested the demo for feedback and bugs, the Dev is really responsive and passionate about updating the game frequently so I definitely think you should give the game a try if you're looking for something unique.