Those could be possible Cards with Amazing names and background stories.
In theory, I have some possibles ideas on how the game could be played:
Like: Equip a team of heroes with armor and artifacts and let them fight. Every character could have different item slots that could be used for equipment. Maybe magic items, melee, and range ( maybe more).
To value cards, Spells could be crafted with spell dust to increase power. Dust could be created out of card burn ( maybe).
A team could be maybe 5 characters ( or change with matchups). In a fight, targets can be placed to attack and defense/ +spells. The speed of characters would be the way of attacks.
So armor could slow down or increase speed for example. Same with damage and armor.
Or give Characters rolls premade to run it like a draft game.
That are only some thoughts.
Cool would be a game like final fantasy tactics. Maybe way too complex and no fun to play :)
Maybe someone else picks it up :D
Overall is still in the brainstorming process. Maybe it never happen. It's not a rush.