Yeah! I'm thinking a mixture of Magic the Gathering and Tamagotchi. Where the cards can level and grow like an RPG.
> Mystic Vale uses the innovative "Card Crafting System", which lets you not only build your deck, but build the individual cards in your deck, customizing each card's abilities to exactly the strategy you want to follow.
You would probably want to go with fewer cards. But something like a deck builder could work.
That's something that goes tastefully beyond what pure normal playing cards can do.
Timers are totally doable.