If you can have full control immunity, that would be just too fantastic.
This passive, which usually only appears on a BOSS, actually belongs to the King Card, definitely a great choice.
As for the [Lonely Soul] conditions also changing to the King Card, the change is not too significant.
The original condition was that only the Captain remains on the field.
You should know that after changing the condition to the King Card, you can also place a [Nameless Sword Spirit] next to it without causing any hindrance.
Another thing worth mentioning is that the [Doram Captain] has a sword on him.
That is to say, he also belongs to the sword-related cards.
And these two cards have the same label, the Spirit Entity Card.
For King Card duels, generally speaking, no one would choose [Defense].
Unless it is a special mechanism like the [Giant Zombie], which can [defend] and [attack] simultaneously.