This is "Overdungeon".
D.Overdungeon Steam Altergift Features Dynamic Deck Building Choose the best card from the hundreds of cards to suit your situation! Trick deadly card combo and summon massive unique animals! Break enemies by making a deck with a combination of cards. There are many cards with unique features such as animals, buildings, spells, traps, and so on. A completely new style real-time card battle "Overdungeon" We created a new style action card game that combines rogue-like, tower defense and card games.