Ybur actually had quite a few questions he wanted to ask Zebuzal—he felt that this Lich seemed to be the kind that could communicate.
Moreover, since he claimed to be Ruby's teacher, Ybur pondered for a moment and thought, "Wouldn't it be reasonable for me to recognize him as my mentor's mentor?"
Mentor's mentor, I am your apprentice's apprentice!!
They say affection skips a generation. Ruby is known as a notoriously crazy old hag, but I am the dutiful and respectful apprentice! So, mentor's mentor, wouldn't you give me a couple of big red envelopes and maybe a few divine artifacts?
Damn it, I haven't even asked for any red envelope yet!
Tsk, stingy.
Ybur then looked around and began to crawl slowly inside Ruby's laboratory.