public void PermanentDamageDeathTest()
        {
            // Arrange
            var c1 = new Creature(attack: 1, health: 2);
            var c2 = new Creature(attack: 1, health: 3);

            // Act
            CardGame game = new PermanentCardDamage(new[] { c1, c2 });

            // Assert
            game.Combat(0, 1).Should().Be(-1);
            game.Combat(0, 1).Should().Be(1);
        }