Lydia, first subordinate of Ominous, most weak and useless of his followers and a dead one at that, but she was still the first, even creation gods had a special place reserved for their first follower or so Ominous was trying to convince himself, the truth is he had separation issues.
She was not only a subordinate but her name was a representation of his past life heritage, in a way having the power and ability to save and preserve her soul was like protecting what humanity was left of him, but preserving her soul was not enough.
He had traveled back in time and saved her soul, she would make a fine new addition to his pantheon, proof of him protecting, rewarding and preserving his loyal subordinates, he needed a flashy symbol and an anchor to hold undeniable proof of his worthiness to acquire upmost loyalty from his subordinates.