It's not a big deal to jump from a twenty-story building without getting hurt. Anyone can do it with a little training. But jumping from the ground to twenty stories is a big deal.
This is the first step into the realm of monsters.
We are Card.
In other words, we are monsters who must fight until one side completely falls once we start the game.
It doesn't matter even if the entire planet that is the location of the battle is completely destroyed during the battle.
Because the battle can continue in the universe.