Pretty sure summoning a bunch of monsters in one turn is legal without screwing the rules.
An upcoming indie RPG for Switch will require the heart of the cards.
French indie studio Seenapsis have announced A Long Way Down, an isometric RPG with a card based battle system. In the vein of titles like Darkest Dungeon, the game is meant for multiple playthroughs.
No release date has been given for the title.