Earth fell centuries ago.

Invaders arrived, elves and demons bringing magic, marvels and monsters,

The world and physics laws changed, forcing humanity to start again. But the invaders gave them no respite, and crushed them before they could accumulate any strength.

Now, only isolated settlements remain hidden across the world. And a single human kingdom scrapes by, surviving by paying tribute to the elves.

Not anymore.

Before the apocalypse, Johan Dantes gambled his life on the power to be reborn, and succeeded. Even if he became a demon, he still calls himself a human. And has a mission.

To lead the survivors, to crush the elves and fight the demons.

The last survivor of the old humanity has returned.

=========

This is a "card crafting" series, not a "card collecting" series.

The cards are used as a power system akin to cultivation and soulcrafting, and there are no cards being dropped by enemies.

Every card must be crafted by the user, as they would construct a spell model.

The card system is modeled like an action rpg, rather than a tabletop card game.

There are no turns.

Summoned creatures will show up much later on.

There are synergies and combinations, but the MC must start from the bottom.

The MC is a spell blade, but it will involve actual swordplay and "sword magic."