Lux didn't bat an eye and chose the first option.
From the very start, he had already decided to make Second a part of his Necromancer Covenant.
Right now, he didn't have an Animated Undead Legion because he had only used the skill, Animate Undead, to revive the dead soldiers of the Ammarian Kingdom, so they could be used as cannon fodder.
Although he had the option to revive those killed Animated Creatures using Beast Cores, Lux had no plan to do that. He would rather revive other dead Creatures than spend his resources on reviving mere cannon fodders.
Of course, he only thought this way because he had become very picky when it came to choosing his subordinates.
Besides, Lux already had a candidate to become the Commander of his Animate Undead Legion, and it was none other than General Revon, who had tried to kill him in the past.
After choosing the option of adding Second to his Necromancer's Covenant, a magic circle appeared under the Vice-General's dead body.